Summary of Significant Accounting Policies - Reconciliation of Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ 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
Accounting Policies [Abstract]
Number of antidilutive securities (in shares)									200	200
Numerator:
Net income	$ 84	$ 61	$ 283	$ 1,180	$ 2,437	$ 1,003	$ 1,600	$ 1,066	$ 1,608	$ 6,106	$ 7,125
Denominator:
Basic weighted-average common shares outstanding (in shares)									13,881	13,730	13,899
Effect of dilutive securities:
Stock awards and options (in shares)									237	735	180
Warrants (in shares)									0	66	71
Diluted weighted-average common shares outstanding (in shares)									14,118	14,531	14,150
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