Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Beginning balances, shares at Jun. 30, 2015		13,958,000
Beginning balances at Jun. 30, 2015	$ 1,806	$ 14	$ 116,749	$ (114,706)	$ (251)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,966		1,966
Exercise of options and warrants, shares		52,000
Exercise of options and warrants	527		527
Issuance of shares related to restricted stock, shares		76,000
Issuance of shares related to restricted stock	0
Shares canceled or surrendered as payment of tax withholding, shares		(58,000)
Currency translation adjustment	244				244
Net income	6,106			6,106
Ending balances, shares at Jun. 30, 2016		14,028,000
Ending balances at Jun. 30, 2016	10,649	$ 14	119,242	(108,600)	(7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	2,315		2,315
Exercise of options and warrants, shares		76,000
Exercise of options and warrants	42		42
Issuance of shares related to restricted stock, shares		166,000
Issuance of shares related to restricted stock	0
Shares canceled or surrendered as payment of tax withholding, shares		(38,000)
Currency translation adjustment	(87)				(87)
Net income	1,608			1,608
Ending balances, shares at Jun. 30, 2017		14,232,000
Ending balances at Jun. 30, 2017	14,527	$ 14	121,599	(106,992)	(94)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	2,990		2,990
Exercise of options and warrants, shares		21,000
Exercise of options and warrants	61		61
Issuance of shares related to restricted stock, shares		190,000
Issuance of shares related to restricted stock	$ 0
Shares canceled or surrendered as payment of tax withholding, shares		(66,000)
Repurchase of company stock, shares	(300,000)	(304,000)
Repurchase of company stock	$ (1,500)			(1,500)
Change in par value of common stock	0	$ (13)	13
Currency translation adjustment	108				108
Net income	5,761			5,761
Ending balances, shares at Jun. 30, 2018		14,073,000
Ending balances at Jun. 30, 2018	$ 21,947	$ 1	$ 124,663	$ (102,731)	$ 14