Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2018	Apr. 30, 2018
Allowance for doubtful accounts receivable	$ 161	$ 159
Property and equipment, accumulated depreciation	28,792	28,644
Capitalized software, accumulated amortization	25,166	24,113
Other intangibles, accumulated amortization	$ 8,852	$ 8,255
Class A treasury stock, shares	4,588,632	4,588,632
Class A Common Shares
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	33,673,376	33,141,760
Common stock, shares Outstanding	29,084,744	28,553,128
Class B Common Shares
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	1,821,587	2,057,390
Common stock, shares Outstanding	1,821,587	2,057,390