Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Cash flows from operating activities:
Net earnings	$ 2,133	$ 2,947
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	768	1,131
Stock-based compensation expense	1,306	775
Net gain on investments	(61)	(376)
Deferred income taxes	(926)	(25)
Changes in operating assets and liabilities:
Purchases of trading securities	(172)	(63)
Proceeds from maturities and sales of trading securities	105	165
Accounts receivable, net	152	1,766
Prepaid expenses and other assets	(448)	(1,606)
Accounts payable and other liabilities	(720)	(1,459)
Deferred revenue	(3,655)	(221)
Net cash (used in) provided by operating activities	(1,518)	3,034
Cash flows from investing activities:
Purchases of property and equipment, net of disposals	(1,572)	(302)
Purchases of business	(6,500)	0
Net cash used in investing activities	(8,072)	(302)
Cash flows from financing activities:
Proceeds from exercise of stock options	471	4,072
Dividends paid	(3,693)	(3,608)
Net cash (used in) provided by financing activities	(3,222)	464
Net change in cash and cash equivalents	(12,812)	3,196
Cash and cash equivalents at beginning of period	110,690	88,658
Cash and cash equivalents at end of period	97,878	91,854
Supplemental disclosure of cash flow information:
Income taxes, net of refunds	5	0
Supplemental disclosures of noncash operating, investing and financing activities:
Accrual of dividends payable	$ 3,705	$ 3,651