Schedule of Unrealized Loss Breakdown by Investment Type (Details) - USD ($)	Jan. 31, 2025	Apr. 30, 2024
Marketable Securities [Line Items]
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,871,000	$ 8,152,000
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(99,000)	(92,000)
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,143,000	1,605,000
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(160,000)	(225,000)
Debt Securities, Available-for-Sale, Unrealized Loss Position	3,014,000	9,757,000
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss	(259,000)	(317,000)
Municipal Bonds [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months	783,000	5,897,000
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(16,000)	(20,000)
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer	633,000	773,000
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(63,000)	(80,000)
Debt Securities, Available-for-Sale, Unrealized Loss Position	1,416,000	6,670,000
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss	(79,000)	(100,000)
Real Estate Investment [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer	39,000	66,000
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(6,000)	(8,000)
Debt Securities, Available-for-Sale, Unrealized Loss Position	39,000	66,000
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss	(6,000)	(8,000)
Equity Securities [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months	1,088,000	2,255,000
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(83,000)	(72,000)
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer	471,000	766,000
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(91,000)	(137,000)
Debt Securities, Available-for-Sale, Unrealized Loss Position	1,559,000	3,021,000
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss	$ (174,000)	$ (209,000)