Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Cash flows from operating activities:
Net income	$ 20,686,000	$ 19,016,000	$ 18,069,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,271,000	1,409,000	1,349,000
Investment (gains)/losses	(559,000)	(287,000)	125,000
Non-voting profits interest in EAM Trust	(2,135,000)	(1,382,000)	(734,000)
Non-voting revenues interest in EAM Trust	(16,183,000)	(11,900,000)	(10,397,000)
Revenues distribution received from EAM Trust	15,570,000	10,900,000	11,284,000
Profits distributions received from EAM Trust	2,075,000	1,023,000	1,043,000
Deferred rent	(1,205,000)	(1,344,000)	(1,240,000)
Deferred income taxes	283,000	92,000	20,000
Deferred income taxes	283,000	92,000	20,000
Changes in operating assets and liabilities:
Unearned revenue	9,000	(692,000)	(800,000)
Accounts payable & accrued expenses	98,000	167,000	(51,000)
Accrued salaries	141,000	59,000	(176,000)
Accrued taxes on income	5,000	(462,000)	185,000
Prepaid and refundable income taxes	167,000	216,000	163,000
Prepaid expenses and other current assets	35,000	303,000	(215,000)
Accounts receivable	(15,000)	814,000	(447,000)
Total adjustments	(443,000)	(1,084,000)	109,000
Net cash provided by operating activities	20,243,000	17,932,000	18,178,000
Cash flows from investing activities:
Proceeds from sales of equity securities	3,243,000	1,129,000	4,706,000
Purchases of equity securities	(7,218,000)	(2,639,000)	(1,732,000)
Proceeds from sales of Fixed Income securities	43,477,000	37,114,000	9,907,000
Purchases of Fixed Income securities	(18,065,000)	(45,575,000)	(38,857,000)
Acquisition of property and equipment	(178,000)	(15,000)	(30,000)
Expenditures for capitalized software	(59,000)	(62,000)	(110,000)
Net cash provided by/(used in) investing activities	21,200,000	(10,048,000)	(26,116,000)
us-gaap_PaymentsForRepurchaseOfCommonStock	453,000	523,000	4,704,000
Dividends paid	(11,303,000)	(10,561,000)	(9,471,000)
Net cash used in financing activities	(11,756,000)	(11,084,000)	(14,175,000)
Net change in cash and cash equivalents	29,687,000	(3,200,000)	(22,113,000)
Cash, cash equivalents and restricted cash at beginning of year	4,695,000	7,895,000	30,008,000
Cash, cash equivalents and restricted cash at end of year	$ 34,382,000	$ 4,695,000	$ 7,895,000