Consolidated Condensed Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2017	Jan. 31, 2016
Net income	$ 1,445	$ 1,913	$ 9,283	$ 6,024
Other comprehensive income (loss), net of tax:
Other comprehensive income (loss), available-for-sale securities adjustment, net of tax	290	(127)	150	(153)
Other comprehensive income (loss)	290	(127)	150	(153)
Comprehensive income	$ 1,735	$ 1,786	$ 9,433	$ 5,871