Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Revenue:
Revenues		$ 31,438	$ 31,211	$ 62,734	$ 60,482
Cost of revenue:
Cost of revenues		12,577	12,825	25,161	25,192
Gross margin		18,861	18,386	37,573	35,290
Research and development		4,364	4,278	8,818	8,702
Sales and marketing		5,697	5,892	11,609	12,012
General and administrative		6,001	5,476	11,766	10,010
Amortization of acquisition-related intangibles		32	53	56	106
Total operating expenses		16,094	15,699	32,249	30,830
Operating income		2,767	2,687	5,324	4,460
Other income (loss):
Interest income		364	97	573	190
Other, net		(509)	833	(599)	1,177
Earnings before income taxes		2,622	3,617	5,298	5,827
Income tax expense (benefit)		541	303	1,084	(434)
Net earnings		$ 2,081	$ 3,314	$ 4,214	$ 6,261
Earnings per common share
Basic (in usd per share)	[1]	$ 0.06	$ 0.10	$ 0.12	$ 0.19
Cash dividends declared per common share (in usd per share)		$ 0.11	$ 0.11	$ 0.22	$ 0.22
Shares used in the calculation of earnings per common share:
Basic (in shares)		33,720	33,337	33,688	33,195
Diluted (in shares)		34,071	34,685	34,040	34,448
Class A Common Shares
Earnings per common share
Basic (in usd per share)		$ 0.06	$ 0.10	$ 0.12	$ 0.19
Diluted (in usd per share)	[1]	$ 0.06	$ 0.10	$ 0.12	$ 0.18
Shares used in the calculation of earnings per common share:
Basic (in shares)		31,898	31,515	31,866	31,373
Diluted (in shares)		34,072	34,685	34,040	34,448
Class B Common Shares
Earnings per common share
Basic (in usd per share)		$ 0.06	$ 0.10	$ 0.12	$ 0.19
Diluted (in usd per share)		$ 0.06	$ 0.10	$ 0.12	$ 0.19
Shares used in the calculation of earnings per common share:
Basic (in shares)		1,822	1,822	1,822	1,822
Diluted (in shares)		1,822	1,822	1,822	1,822
Subscription fees
Revenue:
Revenues		$ 12,326	$ 10,361	$ 24,388	$ 20,149
Cost of revenue:
Cost of revenues		4,059	3,404	7,677	6,628
License
Revenue:
Revenues		688	805	1,008	1,297
Cost of revenue:
Cost of revenues		94	198	183	357
Professional services and other
Revenue:
Revenues		9,594	10,779	19,603	20,308
Cost of revenue:
Cost of revenues		6,847	7,477	14,151	14,487
Maintenance
Revenue:
Revenues		8,830	9,266	17,735	18,728
Cost of revenue:
Cost of revenues		$ 1,577	$ 1,746	$ 3,150	$ 3,720

[1] Basic per share amounts are the same for Class A and Class B shares. Diluted per share amounts for Class A shares are shown above. Diluted earnings per share for Class B shares under the two-class method are $0.06 and $0.10 for the three months ended October 31, 2022 and 2021 and $0.12 and $0.19 for the six months ended October 31, 2022 and 2021. See Note D to the Condensed Consolidated Financial Statements.