Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Jul. 31, 2020	Jul. 31, 2019
Revenues:
Revenues		$ 27,278	$ 27,383
Cost of revenues:
Cost of revenues		13,037	12,761
Gross margin		14,241	14,622
Research and development		4,095	3,328
Sales and marketing		4,744	5,579
General and administrative		4,464	4,821
Amortization of acquisition-related intangibles		53	97
Total operating expenses		13,356	13,825
Operating income		885	797
Other income:
Interest income		126	475
Other, net		1,206	50
Earnings before income taxes		2,217	1,322
Income tax expense		183	170
Net earnings		$ 2,034	$ 1,152
Earnings per common share
Basic (in usd per share)	[1]	$ 0.06	$ 0.04
Diluted (in usd per share)	[1]	0.06	0.04
Cash dividends declared per common share (in usd per share)	[1]	$ 0.11	$ 0.11
Shares used in the calculation of earnings per common share
Basic (in shares)		32,339	31,270
Diluted (in shares)		32,932	31,951
Class B Common Shares
Earnings per common share
Basic (in usd per share)		$ 0.06	$ 0.04
Diluted (in usd per share)		$ 0.06	$ 0.04
Shares used in the calculation of earnings per common share
Basic (in shares)		1,822	1,822
Diluted (in shares)		1,822	1,822
Subscription Fees
Revenues:
Revenues		$ 6,363	$ 4,458
Cost of revenues:
Cost of revenues		2,759	2,125
License
Revenues:
Revenues		787	1,778
Cost of revenues:
Cost of revenues		675	1,380
Professional Services and Other
Revenues:
Revenues		9,814	10,137
Cost of revenues:
Cost of revenues		7,830	7,405
Maintenance
Revenues:
Revenues		10,314	11,010
Cost of revenues:
Cost of revenues		$ 1,773	$ 1,851

[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 $0.04 for the three months ended July 31, 2020 and 2019. See Note E to the Condensed Consolidated Financial Statements.