Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Cash flows from operating activities:
Net earnings	$ 3,791	$ 5,111
Earnings from discontinued operations, net of tax	0	(1,876)
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	2,354	2,007
Stock-based compensation expense	3,196	3,134
Net (gain) loss on investments	(416)	727
Deferred income taxes	(1,744)	1,023
Gain on sale of discontinued operations	0	(2,124)
Changes in operating assets and liabilities:
Purchases of trading securities	(29,489)	(3,958)
Proceeds from sales and maturities of trading securities	14,535	6,251
Accounts receivable, net	11,254	6,845
Prepaid expenses and other assets	483	(2,004)
Accounts payable and other liabilities	(1,721)	(3,822)
Deferred revenue	(9,564)	(4,878)
Net cash (used in) provided by operating activities of continuing operations	(7,321)	6,436
Net cash provided by operating activities of discontinued operations	0	1,618
Net cash (used in) provided by operating activities	(7,321)	8,054
Cash flows from investing activities:
Purchases of property and equipment, net of disposals	(280)	(490)
Purchase of business, net of cash acquired	0	(25,032)
Net cash used in investing activities of continuing operations	(280)	(25,522)
Net cash provided by investing activities of discontinued operations	0	1,825
Net cash used in investing activities	(280)	(23,697)
Cash flows from financing activities:
Proceeds from exercise of stock options	0	246
Purchases of common stock	0	(4,814)
Dividends paid	(7,322)	(7,514)
Net cash used in financing activities of continuing operations	(7,322)	(12,082)
Net change in cash and cash equivalents	(14,923)	(27,725)
Cash and cash equivalents at beginning of period	59,512	90,696
Cash and cash equivalents at end of period	44,589	62,971
Supplemental disclosure of cash flow information:
Income taxes, net of refunds	4,340	2,498
Supplemental disclosures of noncash operating, investing and financing activities:
Accrual of dividends payable	3,707	3,758
Conversion of B shares to common stock	$ 3,756	$ 0