Supplementary Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Quarterly Financial Information Disclosure [Abstract]
Excess tax benefit from share-based compensation recognized as a benefit to income taxes	$ 126	$ (169)	$ 247	$ 896					$ 1,100
Unaudited consolidated quarterly statements of operations data
Net revenues	85,430	65,898	60,417	58,409	$ 64,119	$ 59,578	$ 57,089	$ 54,061	270,154	$ 234,847	$ 208,729
Gross margin	38,176	30,491	28,578	27,529	31,267	27,918	27,035	23,999	124,774	110,219	94,744
Income from operations	7,654	6,819	6,369	3,131	7,931	6,157	3,539	728	23,973	18,355	(7,405)
Income from continuing operations before income taxes	8,590	6,999	6,473	3,224	7,982	6,163	3,933	717	25,286	18,795	(5,913)
Income tax provision (1)	1,101	2,642	1,433	368	1,850	1,469	1,047	0	5,544	4,366	(1,841)
Income (loss) from continuing operations	7,489	4,357	5,040	2,856	6,132	4,694	2,886	717	19,742	14,429	(4,072)
Loss from discontinued operations, net of income taxes	0	0	0	0	(202)	(1,019)	(2,621)	(218)	0	(4,060)	(7,353)
Net income (loss)	$ 7,489	$ 4,357	$ 5,040	$ 2,856	$ 5,930	$ 3,675	$ 265	$ 499	$ 19,742	$ 10,369	$ (11,425)
Basic net earnings (loss) per share:
(Loss) income from continuing operations (dollars per share)	$ 0.20	$ 0.13	$ 0.15	$ 0.09	$ 0.19	$ 0.14	$ 0.09	$ 0.02	$ 0.58	$ 0.45	$ (0.13)
(Loss) income from discontinued operations (dollars per share)	0.00	0.00	0.00	0.00	(0.01)	(0.03)	(0.08)	0.00	0.00	(0.13)	(0.24)
Basic net (loss) earnings per share (dollars per share)	0.20	0.13	0.15	0.09	0.18	0.11	0.01	0.02	0.58	0.32	(0.37)
Diluted net earnings (loss) per share:
(Loss) income from continuing operations (dollars per share)	0.19	0.13	0.15	0.08	0.18	0.14	0.09	0.02	0.56	0.44	(0.13)
(Loss) income from discontinued operations (dollars per share)	0.00	0.00	0.00	0.00	0.00	(0.03)	(0.08)	0.00	0.00	(0.13)	(0.24)
Diluted net (loss) earnings per share (dollars per share)	$ 0.19	$ 0.13	$ 0.15	$ 0.08	$ 0.18	$ 0.11	$ 0.01	$ 0.02	$ 0.56	$ 0.31	$ (0.37)