Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2023	Jul. 31, 2022
Cash flows from operating activities:
Net earnings	$ 2,748	$ 2,133
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	731	768
Stock-based compensation expense	1,554	1,306
Net gain on investments	(755)	(61)
Deferred income taxes	(657)	(926)
Changes in operating assets and liabilities:
Purchases of trading securities	0	(172)
Proceeds from maturities and sales of trading securities	3,251	105
Accounts receivable, net	3,973	152
Prepaid expenses and other assets	2,053	(448)
Accounts payable and other liabilities	(2,403)	(720)
Deferred revenue	(3,327)	(3,655)
Net cash provided by (used in) operating activities	7,168	(1,518)
Cash flows from investing activities:
Purchases of property and equipment, net of disposals	(467)	(1,572)
Purchase of business	0	(6,500)
Net cash used in investing activities	(467)	(8,072)
Cash flows from financing activities:
Proceeds from exercise of stock options	246	471
Dividends paid	(3,756)	(3,693)
Net cash used in financing activities	(3,510)	(3,222)
Net change in cash and cash equivalents	3,191	(12,812)
Cash and cash equivalents at beginning of period	90,696	110,690
Cash and cash equivalents at end of period	93,887	97,878
Supplemental disclosure of cash flow information:
Income taxes, net of refunds	0	5
Supplemental disclosures of noncash operating, investing and financing activities:
Accrual of dividends payable	$ 3,758	$ 3,705