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Interim Financial Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Summary of selected quarterly financial information
Revenue, net	$ 50,641	$ 45,007	$ 48,947	$ 54,894	$ 53,033	$ 56,160	$ 51,995	$ 45,352	$ 199,489	$ 206,540	$ 190,336
Gross profit	41,750	36,774	41,447	46,062	43,632	46,446	44,153	38,377	166,033	172,608	162,326
Net income	$ 84	$ 61	$ 283	$ 1,180	$ 2,437	$ 1,003	$ 1,600	$ 1,066	$ 1,608	$ 6,106	$ 7,125
Per common share:
Net income per share, basic (dollars per share)	$ 0.01	$ 0.00	$ 0.02	$ 0.09	$ 0.18	$ 0.07	$ 0.12	$ 0.08	$ 0.12	$ 0.44	$ 0.51
Net income per share, diluted (dollars per share)	$ 0.01	$ 0.00	$ 0.02	$ 0.08	$ 0.17	$ 0.07	$ 0.11	$ 0.08	$ 0.11	$ 0.42	$ 0.50

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- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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