Unaudited Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance at Jun. 30, 2018	$ 48,632	$ 86	$ 521,738	$ 1,093	$ (474,285)
Balance (in shares) at Jun. 30, 2018	86,129,256	86,129,256
Exercise of stock options, net	$ 14		14
Exercise of Stock options, net (in shares)		3,500
Issuance of restricted stock (in shares)		367,504
Share-based compensation	2,947		2,947
Adoption of new revenue recognition standard	5,114				5,114
Net loss	(9,206)				(9,206)
Cumulative translation adjustment	(395)			(395)
Balance at Sep. 30, 2018	47,106	$ 86	524,699	698	(478,377)
Balance (in shares) at Sep. 30, 2018		86,500,260
Balance at Jun. 30, 2018	$ 48,632	$ 86	521,738	1,093	(474,285)
Balance (in shares) at Jun. 30, 2018	86,129,256	86,129,256
Net loss	$ (13,846)
Cumulative translation adjustment	(334)
Balance at Dec. 31, 2018	$ 46,145	$ 88	528,254	759	(482,956)
Balance (in shares) at Dec. 31, 2018	87,885,603	87,885,603
Balance at Sep. 30, 2018	$ 47,106	$ 86	524,699	698	(478,377)
Balance (in shares) at Sep. 30, 2018		86,500,260
Exercise of stock options, net	58		58
Exercise of Stock options, net (in shares)		14,550
Issuance of restricted stock		$ 2	(2)
Issuance of restricted stock (in shares)		1,054,539
Issuance of common stock under employee stock purchase plan	1,540		1,540
Issuance of common stock under employee stock purchase plan (in shares)		442,051
Share-based compensation	1,959		1,959
Tax withholding upon vesting of restricted stock units (in shares)		(125,797)
Adoption of new revenue recognition standard	61				61
Net loss	(4,640)				(4,640)
Cumulative translation adjustment	61			61
Balance at Dec. 31, 2018	$ 46,145	$ 88	$ 528,254	$ 759	$ (482,956)
Balance (in shares) at Dec. 31, 2018	87,885,603	87,885,603