Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022
Revenue:
Revenues		$ 31,011	$ 32,422	$ 93,745	$ 92,904
Cost of revenue:
Cost of revenues		12,273	13,472	37,434	38,664
Gross margin		18,738	18,950	56,311	54,240
Research and development		4,402	4,602	13,220	13,304
Sales and marketing		5,325	5,222	16,934	17,234
General and administrative		6,030	5,834	17,796	15,844
Amortization of acquisition-related intangibles		25	53	81	159
Total operating expenses		15,782	15,711	48,031	46,541
Operating income		2,956	3,239	8,280	7,699
Other income (loss):
Interest income		701	97	1,274	287
Other, net		633	(5)	34	1,172
Earnings before income taxes		4,290	3,331	9,588	9,158
Income tax expense (benefit)		950	391	2,034	(43)
Net earnings		$ 3,340	$ 2,940	$ 7,554	$ 9,201
Earnings per common share
Basic (in usd per share)	[1]	$ 0.10	$ 0.09	$ 0.22	$ 0.28
Cash dividends declared per common share (in usd per share)		$ 0.11	$ 0.11	$ 0.33	$ 0.33
Shares used in the calculation of earnings per common share:
Basic (in shares)		33,759	33,490	33,711	33,293
Diluted (in shares)		33,965	34,578	34,006	34,325
Class A Common Shares
Earnings per common share
Basic (in usd per share)		$ 0.10	$ 0.09	$ 0.22	$ 0.28
Diluted (in usd per share)	[1]	$ 0.10	$ 0.09	$ 0.22	$ 0.27
Shares used in the calculation of earnings per common share:
Basic (in shares)		31,937	31,668	31,890	31,471
Diluted (in shares)		33,965	34,578	34,006	34,325
Class B Common Shares
Earnings per common share
Basic (in usd per share)		$ 0.10	$ 0.09	$ 0.22	$ 0.28
Diluted (in usd per share)		$ 0.10	$ 0.09	$ 0.22	$ 0.28
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		$ 13,003	$ 10,856	$ 37,391	$ 31,005
Cost of revenue:
Cost of revenues		4,005	3,431	11,682	10,059
License
Revenue:
Revenues		1,017	992	2,025	2,289
Cost of revenue:
Cost of revenues		358	240	541	597
Professional services and other
Revenue:
Revenues		8,342	11,443	27,945	31,751
Cost of revenue:
Cost of revenues		6,303	8,012	20,454	22,499
Maintenance
Revenue:
Revenues		8,649	9,131	26,384	27,859
Cost of revenue:
Cost of revenues		$ 1,607	$ 1,789	$ 4,757	$ 5,509

[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 $0.10 and $0.09 for the three months ended January 31, 2023 and 2022 and $0.22 and $0.28 for the nine months ended January 31, 2023 and 2022. See Note D to the Condensed Consolidated Financial Statements.