Consolidated Condensed Statements of Cash Flows - USD ($)	6 Months Ended
	Oct. 31, 2020	Oct. 31, 2019
Cash flows from operating activities:
Net income	$ 10,173,000	$ 7,901,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	638,000	137,000
Realized gains on sales of equity securities	(925,000)
Non-voting revenues interest in EAM Trust	(7,009,000)	(5,356,000)
Non-voting profits interest in EAM Trust	(849,000)	(573,000)
Distributions received from EAM Trust	6,672,000	5,368,000
Deferred income taxes	19,000	218,000
Deferred rent obligation	(470,000)	56,000
Changes in operating assets and liabilities:
Unearned revenue	(1,949,000)	(2,734,000)
Accounts payable & accrued expenses	(304,000)	(550,000)
Accrued salaries	(127,000)	(124,000)
Accrued taxes on income	(1,151,000)	(196,000)
Prepaid and refundable income taxes		200,000
Prepaid expenses and other current assets	112,000	271,000
Accounts receivable	2,838,000	(2,816,000)
Total adjustments	(2,505,000)	(6,099,000)
Net cash provided by operating activities	7,668,000	1,802,000
Cash flows from investing activities:
Purchases of equity securities classified as available-for-sale	(7,636,000)	(906,000)
Purchases of fixed income securities classified as available-for-sale	(2,496,000)	(3,472,000)
Proceeds from sales of equity securities classified as available-for-sale	5,529,000
Proceeds from sales of fixed income securities classified as available-for-sale	5,214,000	4,974,000
Acquisition of property and equipment	(21,000)	(2,000)
Expenditures for capitalized software	(82,000)
Net cash provided by investing activities	508,000	594,000
Cash flows from financing activities:
Purchase of treasury stock at cost	(422,000)	(393,000)
Receivable from clearing broker	608,000
Payable to clearing broker	(588,000)
Dividends paid	(4,039,000)	(3,865,000)
Net cash used in financing activities	(4,441,000)	(4,258,000)
Net change in cash and cash equivalents	3,735,000	(1,862,000)
Cash, cash equivalents and restricted cash at beginning of period	5,423,000	6,962,000
Cash, cash equivalents and restricted cash at end of period	$ 9,158,000	$ 5,100,000