Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jan. 31, 2020	Apr. 30, 2019
Allowance for doubtful accounts receivable	$ 225	$ 153
Property and equipment, accumulated depreciation	29,804	29,327
Capitalized software, accumulated amortization	33,285	28,740
Other intangibles, accumulated amortization	$ 11,931	$ 10,643
Class A Common Shares
Common stock, par value (in usd per share)	$ 0.10	$ 0.10
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	34,782,183	33,979,739
Common stock, shares outstanding	30,193,551	29,391,107
Class A treasury stock (in shares)	4,588,632	4,588,632
Class B Common Shares
Common stock, par value (in usd per share)	$ 0.10	$ 0.10
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	1,821,587	1,821,587
Common stock, shares outstanding	1,821,587	1,821,587