v3.26.1
Schedule of Investments (Details) - USD ($)
 9 Months Ended 12 Months Ended
Jan. 31, 2026
Apr. 30, 2025
Marketable Securities [Line Items]    
Cost Basis $ 28,447,000 $ 26,713,000
Gross Unrealized Gains 13,060,000 9,472,000
Gross Unrealized Losses (183,000) (449,000)
Fair Value 41,324,000 35,736,000
Municipal Bonds [Member]    
Marketable Securities [Line Items]    
Cost Basis 8,570,000 7,681,000
Gross Unrealized Gains 212,000 141,000
Gross Unrealized Losses (64,000) (135,000)
Fair Value 8,718,000 7,687,000
Real Estate Investment [Member]    
Marketable Securities [Line Items]    
Cost Basis 74,000 74,000
Gross Unrealized Gains 5,000 1,000
Gross Unrealized Losses (9,000) (7,000)
Fair Value 70,000 68,000
Equity Securities [Member]    
Marketable Securities [Line Items]    
Cost Basis 18,492,000 17,689,000
Gross Unrealized Gains 12,843,000 9,330,000
Gross Unrealized Losses (110,000) (307,000)
Fair Value 31,225,000 26,712,000
Money Markets and CDs [Member]    
Marketable Securities [Line Items]    
Cost Basis 1,311,000 1,269,000
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value $ 1,311,000 $ 1,269,000