v3.25.4
Shareholder Report, Average Annual Return (Details)
12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Banking Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Banking Fund
Average Annual Return, Percent 23.74% 11.69% 8.98%
Basic Materials | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Basic Materials Fund
Average Annual Return, Percent 32.89% 9.42% 11.58%
Biotechnology Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Biotechnology Fund
Average Annual Return, Percent 30.12% 3.55% 5.42%
Consumer Products Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Consumer Products Fund
Average Annual Return, Percent (3.52%) 1.32% 3.80%
Electronics Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Electronics Fund
Average Annual Return, Percent 41.49% 18.80% 23.66%
Energy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Energy Fund
Average Annual Return, Percent 7.51% 19.52% 4.64%
Energy Services Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Energy Services Fund
Average Annual Return, Percent 1.74% 10.39% (5.65%)
Financial Services Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Financial Services Fund
Average Annual Return, Percent 10.76% 11.31% 9.88%
Health Care Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Health Care Fund
Average Annual Return, Percent 14.07% 4.64% 7.44%
Internet Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Internet Fund
Average Annual Return, Percent 18.50% 2.54% 11.93%
Leisure Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Leisure Fund
Average Annual Return, Percent 8.47% 2.50% 7.27%
Precious Metals Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Precious Metals Fund
Average Annual Return, Percent 147.37% 17.52% 21.08%
Real Estate Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Real Estate Fund
Average Annual Return, Percent 2.88% 3.02% 4.00%
Retailing Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Retailing Fund
Average Annual Return, Percent 10.18% 4.22% 9.18%
Technology Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Technology Fund
Average Annual Return, Percent 25.70% 12.27% 18.37%
Telecommunications Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Telecommunications Fund
Average Annual Return, Percent 31.13% 5.45% 6.64%
Transportation Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Transportation Fund
Average Annual Return, Percent 11.79% 2.32% 8.06%
Utilities Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Utilities Fund
Average Annual Return, Percent 17.07% 8.56% 8.60%
Dow 2x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Dow 2x Strategy Fund
Average Annual Return, Percent 19.49% 14.77% 18.17%
Inverse Dow 2x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Inverse Dow 2x Strategy Fund
Average Annual Return, Percent (20.69%) (18.02%) (25.05%)
Mid-Cap 1.5x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Mid-Cap 1.5x Strategy Fund
Average Annual Return, Percent 5.04% 8.37% 11.16%
Inverse Mid-Cap Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Inverse Mid-Cap Strategy Fund
Average Annual Return, Percent (5.11%) (7.51%) (10.94%)
NASDAQ-100(R) Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     NASDAQ-100® Fund
Average Annual Return, Percent 19.04% 13.32% 17.60%
NASDAQ-100(R) 2x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     NASDAQ-100® 2x Strategy Fund
Average Annual Return, Percent 29.24% 18.83% 29.69%
Inverse NASDAQ-100(R) Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Inverse NASDAQ-100® Strategy Fund
Average Annual Return, Percent (16.18%) (13.53%) (17.67%)
Russell 2000(R) 1.5x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Russell 2000® 1.5x Strategy Fund
Average Annual Return, Percent 12.47% 3.43% 9.25%
Russell 2000(R) 2x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Russell 2000® 2x Strategy Fund
Average Annual Return, Percent 12.07% 1.43% 9.07%
Inverse Russell 2000(R) Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Inverse Russell 2000® Strategy Fund
Average Annual Return, Percent (9.58%) (6.24%) (11.19%)
Nova Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Nova Fund
Average Annual Return, Percent 20.87% 16.53% 17.73%
S&P 500 2x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500® 2x Strategy Fund
Average Annual Return, Percent 25.28% 19.77% 21.33%
Inverse S&P 500 Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Inverse S&P 500® Strategy Fund
Average Annual Return, Percent (11.76%) (10.49%) (12.91%)
S&P 500 Pure Growth Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500® Pure Growth Fund
Average Annual Return, Percent 11.75% 6.62% 10.34%
S&P 500 Pure Value Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500® Pure Value Fund
Average Annual Return, Percent 16.02% 12.00% 8.64%
S&P MidCap 400 Pure Growth Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P MidCap 400® Pure Growth Fund
Average Annual Return, Percent 7.18% 4.39% 6.85%
S&P MidCap 400 Pure Value Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P MidCap 400® Pure Value Fund
Average Annual Return, Percent 6.12% 12.00% 10.60%
S&P SmallCap 600 Pure Growth Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P SmallCap 600® Pure Growth Fund
Average Annual Return, Percent 8.59% 2.89% 6.53%
S&P SmallCap 600 Pure Value Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P SmallCap 600® Pure Value Fund
Average Annual Return, Percent 6.77% 12.03% 7.65%
Government Long Bond 1.2x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Government Long Bond 1.2x Strategy Fund
Average Annual Return, Percent 1.67% (13.64%) (3.35%)
Inverse Government Long Bond Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Inverse Government Long Bond Strategy Fund
Average Annual Return, Percent 1.85% 12.87% 1.41%
High Yield Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     High Yield Strategy Fund
Average Annual Return, Percent 9.87% 3.52% 4.77%
Europe 1.25x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Europe 1.25x Strategy Fund
Average Annual Return, Percent 36.46% 10.40% 7.59%
Japan 2x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Japan 2x Strategy Fund
Average Annual Return, Percent 51.54% 0.16% 9.51%
Strengthening Dollar 2x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Strengthening Dollar 2x Strategy Fund
Average Annual Return, Percent (14.29%) 6.16% 1.80%
Weakening Dollar 2x Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Weakening Dollar 2x Strategy Fund
Average Annual Return, Percent 18.97% (5.72%) (2.86%)
Commodities Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Commodities Strategy Fund
Average Annual Return, Percent 4.89% 12.80% 4.76%
Global Managed Futures Strategy Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Global Managed Futures Strategy Fund
Average Annual Return, Percent 3.65% 3.94% 1.27%
Multi-Hedge Strategies Fund | Variable Annuity      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Multi-Hedge Strategies Fund
Average Annual Return, Percent 1.25% 1.23% 1.62%
U.S. Government Money Market Fund | Variable Annuity      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.84% 2.22% 1.26%
S&P 500 Index, Banking Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Basic Materials      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Biotechnology Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Consumer Products Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Electronics Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Energy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Energy Services Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Financial Services Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Health Care Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Internet Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Leisure Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Precious Metals Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Real Estate Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Retailing Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Technology Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Telecommunications Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Transporation Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Utilities Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Dow 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Inverse Dow 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Mid Cap 1.5x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Inverse Mid Cap Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, NASDAQ 100 Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, NASDAQ 100 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Inverse NASDAQ 100 Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Russell 2000 1.5x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Russell 2000 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Inverse Russell 2000 Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Nova Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, S&P 500 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Inverse S&P 500 Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, S&P 500 Pure Growth Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, S&P 500 Pure Value Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, S&P 400 Pure Growth Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, S&P 400 Pure Value Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, S&P 600 Pure Growth Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, S&P 600 Pure Value Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
Bloomberg U.S. Aggregate Bond Index, Government Long Bond 1.2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Bloomberg U.S. Aggregate Bond Index
Average Annual Return, Percent 7.30% (0.36%) 2.01%
Bloomberg U.S. Aggregate Bond Index, Inverse Government Long Bond Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Bloomberg U.S. Aggregate Bond Index
Average Annual Return, Percent 7.30% (0.36%) 2.01%
Bloomberg U.S. Aggregate Bond Index, High Yield Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Bloomberg U.S. Aggregate Bond Index
Average Annual Return, Percent 7.30% (0.36%) 2.01%
MSCI World ex US Index, Europe 1.25x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     MSCI World ex US Index
Average Annual Return, Percent 28.59% 6.70% 5.75%
MSCI World ex US Index, Japan 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     MSCI World ex US Index
Average Annual Return, Percent 28.59% 6.70% 5.75%
Bloomberg U.S. Aggregate Bond Index, Strengthening Dollar 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Bloomberg U.S. Aggregate Bond Index
Average Annual Return, Percent 7.30% (0.36%) 2.01%
Bloomberg U.S. Aggregate Bond Index, Weaking Dollar 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Bloomberg U.S. Aggregate Bond Index
Average Annual Return, Percent 7.30% (0.36%) 2.01%
S&P 500 Index, Commodities Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Global Managed Futures Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Index, Multi Hedge Strategies Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Index
Average Annual Return, Percent 17.88% 14.42% 14.82%
S&P 500 Financials Index, Banking Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Financials Index
Average Annual Return, Percent 15.02% 15.27% 13.18%
S&P 500 Materials Index, Basic Materials      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Materials Index
Average Annual Return, Percent 10.54% 6.79% 9.92%
S&P 500 Health Care Index, Biotechnology Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Health Care Index
Average Annual Return, Percent 14.60% 8.21% 9.91%
S&P 500 Consumer Staples Index, Consumer Products Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Consumer Staples Index
Average Annual Return, Percent 3.90% 7.18% 8.16%
S&P 500 Information Technology Index, Electronics Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Information Technology Index
Average Annual Return, Percent 24.04% 20.91% 24.30%
S&P 500 Energy Index, Energy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Energy Index
Average Annual Return, Percent 8.67% 23.78% 8.32%
S&P 500 Energy Index, Energy Services Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Energy Index
Average Annual Return, Percent 8.67% 23.78% 8.32%
S&P 500 Financials Index, Financial Services Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Financials Index
Average Annual Return, Percent 15.02% 15.27% 13.18%
S&P 500 Health Care Index, Health Care Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Health Care Index
Average Annual Return, Percent 14.60% 8.21% 9.91%
S&P 500 Information Technology Index, Internet Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Information Technology Index
Average Annual Return, Percent 24.04% 20.91% 24.30%
S&P 500 Consumer Discretionary Index, Leisure Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Consumer Discretionary Index
Average Annual Return, Percent 6.04% 9.02% 13.19%
S&P 500 Materials Index, Precious Metals Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Materials Index
Average Annual Return, Percent 10.54% 6.79% 9.92%
MSCI U.S. REIT Index, Real Estate Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     MSCI U.S. REIT Index
Average Annual Return, Percent 2.95% 6.58% 5.71%
S&P 500 Consumer Discretionary Index, Retailing Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Consumer Discretionary Index
Average Annual Return, Percent 6.04% 9.02% 13.19%
S&P 500 Information Technology Index, Technology Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Information Technology Index
Average Annual Return, Percent 24.04% 20.91% 24.30%
S&P 500 Telecommunication Services Index, Telecommunications Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Telecommunication Services Index
Average Annual Return, Percent 6.91% 4.09% 5.10%
S&P 500 Industrials Index, Transportation Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Industrials Index
Average Annual Return, Percent 19.42% 13.66% 13.02%
S&P 500 Utilities Index, Utilities Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Utilities Index
Average Annual Return, Percent 16.04% 9.73% 10.61%
Dow Jones Industrial Average, Dow 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Dow Jones Industrial Average
Average Annual Return, Percent 14.92% 11.58% 13.11%
Dow Jones Industrial Average, Inverse Dow 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Dow Jones Industrial Average
Average Annual Return, Percent 14.92% 11.58% 13.11%
S&P MidCap 400 Index, Mid Cap 1.5 Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P MidCap 400 Index
Average Annual Return, Percent 7.50% 9.12% 10.72%
S&P MidCap 400 Index, Inverse Mid Cap Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P MidCap 400 Index
Average Annual Return, Percent 7.50% 9.12% 10.72%
NASDAQ-100 Index, NASDAQ 100 Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     NASDAQ-100 Index
Average Annual Return, Percent 21.02% 15.30% 19.70%
NASDAQ-100 Index, NASDAQ 100 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     NASDAQ-100 Index
Average Annual Return, Percent 21.02% 15.30% 19.70%
NASDAQ-100 Index, Inverse NASDAQ 100 Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     NASDAQ-100 Index
Average Annual Return, Percent 21.02% 15.30% 19.70%
Russell 2000 Index, Russell 2000 1.5x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Russell 2000 Index
Average Annual Return, Percent 12.81% 6.09% 10.08%
Russell 2000 Index, Russell 2000 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Russell 2000 Index
Average Annual Return, Percent 12.81% 6.09% 10.08%
Russell 2000 Index, Inverse Russell 2000 Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Russell 2000 Index
Average Annual Return, Percent 12.81% 6.09% 10.08%
S&P 500 Pure Growth Index, S&P 500 Pure Growth Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Pure Growth Index
Average Annual Return, Percent 13.86% 8.41% 12.24%
S&P 500 Pure Value Index, S&P 500 Pure Value Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P 500 Pure Value Index
Average Annual Return, Percent 17.66% 13.92% 10.53%
S&P MidCap 400 Pure Growth Index, S&P 400 Pure Growth Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P MidCap 400 Pure Growth Index
Average Annual Return, Percent 9.10% 6.21% 8.68%
S&P MidCap 400 Pure Value Index, S&P 400 Pure Value Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P MidCap 400 Pure Value Index
Average Annual Return, Percent 7.94% 13.99% 12.58%
S&P SmallCap 600 Pure Growth Index, S&P 600 Pure Growth Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P SmallCap 600 Pure Growth Index
Average Annual Return, Percent 10.48% 4.70% 8.46%
S&P SmallCap 600 Pure Value Index, S&P 600 Pure Value Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P SmallCap 600 Pure Value Index
Average Annual Return, Percent 8.76% 14.20% 9.65%
Bloomberg U.S. Treasury 30 Year Bellwether Index, Government Long Bond 1.2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Bloomberg U.S. Treasury 30 Year Bellwether Index
Average Annual Return, Percent 3.73% (9.17%) (0.88%)
Bloomberg U.S. Treasury 30 Year Bellwether Index, Inverse Government Long Bond Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Bloomberg U.S. Treasury 30 Year Bellwether Index
Average Annual Return, Percent 3.73% (9.17%) (0.88%)
Bloomberg U.S. Corporate High Yield Index, High Yield Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Bloomberg U.S. Corporate High Yield Index
Average Annual Return, Percent 8.62% 4.51% 6.53%
STOXX Europe 50 Index, Europe 1.25x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     STOXX Europe 50 Index
Average Annual Return, Percent 33.10% 11.66% 8.69%
Nikkei-225 Stock Average Index, Japan 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     Nikkei-225 Stock Average Index
Average Annual Return, Percent 26.84% 3.91% 7.39%
U.S. Dollar Index, Strengthening Dollar 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     U.S. Dollar Index
Average Annual Return, Percent (9.37%) 1.80% (0.03%)
U.S. Dollar Index, Weaking Dollar 2x Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     U.S. Dollar Index
Average Annual Return, Percent (9.37%) 1.80% (0.03%)
S&P Goldman Sachs Commodity Index, Commodities Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     S&P Goldman Sachs Commodity Index
Average Annual Return, Percent 7.12% 14.65% 6.08%
ICE BofA 3-Month U.S. Treasury Bill Index, Global Managed Futures Strategy Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     ICE BofA 3-Month U.S. Treasury Bill Index
Average Annual Return, Percent 4.21% 3.19% 2.19%
HFRX Global Hedge Fund Index, Multi Hedge Strategies Fund      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name     HFRX Global Hedge Fund Index
Average Annual Return, Percent 7.13% 2.87% 3.08%