v3.26.1
Shareholder Report, Average Annual Return (Details)
 6 Months Ended 12 Months Ended 60 Months Ended 120 Months Ended
Mar. 31, 2026
Mar. 31, 2026
Mar. 31, 2026
Mar. 31, 2026
Without Sales Load [Member] | C000095455        
Average Annual Return [Line Items]        
Average Annual Return, Percent 0.87% 4.56% 2.49% 3.93%
Without Sales Load [Member] | C000095454        
Average Annual Return [Line Items]        
Average Annual Return, Percent 0.75% 4.30% 2.24% 3.68%
Without Sales Load [Member] | C000119956        
Average Annual Return [Line Items]        
Average Annual Return, Percent 0.17% 5.43% 4.20% 4.91%
Without Sales Load [Member] | C000119955        
Average Annual Return [Line Items]        
Average Annual Return, Percent (0.07%) 5.04% 3.95% 4.65%
Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index      
Average Annual Return, Percent 1.05% 4.35% 0.31% 1.70%
Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index      
Average Annual Return, Percent 1.05% 4.35% 0.31% 1.70%
Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index      
Average Annual Return, Percent 1.05% 4.35% 0.31% 1.70%
Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index      
Average Annual Return, Percent 1.05% 4.35% 0.31% 1.70%
ICE BofAML Non-Financial Developed HY Constrained Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name ICE BofAML Non-Financial Developed HY Constrained Index      
Average Annual Return, Percent (0.03%) 7.57% 3.66% 5.51%
S&P UBS Leveraged Loan Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name S&P UBS Leveraged Loan Index      
Average Annual Return, Percent 0.71% 4.79% 5.85% 5.59%
ICE BofAML Non-Financial Developed HY Constrained Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name ICE BofAML Non-Financial Developed HY Constrained Index      
Average Annual Return, Percent (0.03%) 7.57% 3.66% 5.51%
S&P UBS Leveraged Loan Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name S&P UBS Leveraged Loan Index      
Average Annual Return, Percent 0.71% 4.79% 5.85% 5.59%