Financial Statements and Supplementary Data (Unaudited) (Tables)

12 Months Ended

Apr. 30, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Results

The following schedule presents results for each quarter in the years ended April 30, 2017 and 2016 (in thousands, except per share amounts):

	Total revenues		Gross margin		Operating income		Net earnings		Diluted earnings per share
Quarter ended:
July 31, 2016	$	27,433	$	13,796	$	1,646	$	1,688	$	0.06
October 31, 2016		26,146		13,018		708		412		0.01
January 31, 2017		26,441		14,049		2,455		2,243		0.08
April 30, 2017		26,266		14,340		2,957		10,278		0.34
Year ended April 30, 2017	$	106,286	$	55,202	$	7,766	$	14,621	$	0.49
Quarter ended:
July 31, 2015	$	28,858	$	15,317	$	3,820	$	2,572	$	0.09
October 31, 2015		29,070		14,897		3,328		2,153		0.07
January 31, 2016		27,095		13,607		2,518		2,111		0.07
April 30, 2016		28,866		15,839		3,861		3,406		0.12
Year ended April 30, 2016	$	113,889	$	59,660	$	13,527	$	10,242	$	0.35