Interim Financial Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Summary of selected quarterly financial information
Revenue, net	$ 45,301	$ 45,155	$ 48,247	$ 51,633	$ 56,038	$ 55,064	$ 51,538	$ 51,328	$ 190,336	$ 213,968	$ 208,178
Gross profit	38,008	37,603	40,761	45,954	47,056	46,605	43,594	43,519	162,326	180,774	171,535
Net income	$ 226	$ 573	$ 1,472	$ 4,716	$ 2,351	$ 2,494	$ 3,282	$ 3,256	$ 6,987	$ 11,383	$ 7,608
Per common share:
Basic (dollars per share)	$ 0.00	$ 0.01	$ 0.02	$ 0.05	$ 0.02	$ 0.02	$ 0.03	$ 0.03	$ 0.07	$ 0.11	$ 0.07
Diluted (dollars per share)	$ 0.00	$ 0.01	$ 0.01	$ 0.05	$ 0.02	$ 0.02	$ 0.03	$ 0.03	$ 0.07	$ 0.10	$ 0.06