Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) $ in Thousands	3 Months Ended
	Jul. 31, 2022 USD ($) $ / shares shares	Apr. 30, 2022 USD ($) $ / shares shares
Allowance for doubtful accounts receivable | $	$ 344	$ 423
Property and equipment, accumulated depreciation | $	31,452	31,240
Capitalized software, accumulated amortization | $	42,464	42,007
Other intangibles, accumulated amortization | $	$ 13,327	$ 13,228
Share conversion ratio	1
Class A Common Shares
Common stock, par value (in usd per share) | $ / shares	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	36,448,695	36,405,695
Common stock, shares outstanding (in shares)	36,448,695	36,405,695
Common stock, shares outstanding, net (in shares)	31,860,063	31,817,063
Common stock, shares issued, net (in shares)	31,860,063	31,817,063
Class A treasury stock shares (in shares)	4,588,632	4,588,632
Class B Common Shares
Common stock, par value (in usd per share) | $ / shares	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, shares issued (in shares)	1,821,587	1,821,587
Common stock, shares outstanding (in shares)	1,821,587	1,821,587