CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Net income (loss)	$ 11,320	$ (2,939)
Other comprehensive income (loss), net of tax:
Change in pension liability, net of tax ($1,016 in 2015 and $1,464 in 2014)	(1,658)	2,389
Other comprehensive income (loss)	(1,658)	2,389
Total comprehensive income (loss)	$ 9,662	$ (550)