Unaudited Condensed Consolidated Statements 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
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 income (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
Net income (loss)	(15,030)
Cumulative translation adjustment	(604)
Balance at Mar. 31, 2019	47,644	$ 88	531,207	489	(484,140)
Balance (in shares) at Mar. 31, 2019		88,020,073
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 income (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
Exercise of stock options, net	417		417
Exercise of Stock options, net (in shares)		96,882
Issuance of restricted stock (in shares)		37,588
Share-based compensation	2,536		2,536
Net income (loss)	(1,184)				(1,184)
Cumulative translation adjustment	(270)			(270)
Balance at Mar. 31, 2019	47,644	$ 88	531,207	489	(484,140)
Balance (in shares) at Mar. 31, 2019		88,020,073
Balance at Jun. 30, 2019	$ 49,871	$ 89	535,332	(10)	(485,540)
Balance (in shares) at Jun. 30, 2019	88,521,511	88,521,511
Issuance of restricted stock	$ (207)		(207)
Issuance of restricted stock (in shares)		356,999
Share-based compensation	1,684		1,684
Net income (loss)	(9,356)				(9,356)
Cumulative translation adjustment	(1,018)			(1,018)
Balance at Sep. 30, 2019	40,974	$ 89	536,809	(1,028)	(494,896)
Balance (in shares) at Sep. 30, 2019		88,878,510
Balance at Jun. 30, 2019	$ 49,871	$ 89	535,332	(10)	(485,540)
Balance (in shares) at Jun. 30, 2019	88,521,511	88,521,511
Net income (loss)	$ 3,979
Cumulative translation adjustment	(769)
Balance at Mar. 31, 2020	$ 59,877	$ 91	542,126	(779)	(481,561)
Balance (in shares) at Mar. 31, 2020	88,521,511	90,516,626
Balance at Sep. 30, 2019	$ 40,974	$ 89	536,809	(1,028)	(494,896)
Balance (in shares) at Sep. 30, 2019		88,878,510
Issuance of restricted stock	1	$ 1
Issuance of restricted stock (in shares)		987,765
Issuance of common stock under employee stock purchase plan	1,357		1,357
Issuance of common stock under employee stock purchase plan (in shares)		523,714
Share-based compensation	2,081		2,081
Tax withholding upon vesting of restricted stock units (in shares)		(58,536)
Net income (loss)	10,710				10,710
Cumulative translation adjustment	877			877
Balance at Dec. 31, 2019	56,000	$ 90	540,247	(151)	(484,186)
Balance (in shares) at Dec. 31, 2019		90,331,453
Issuance of restricted stock	1	$ 1
Issuance of restricted stock (in shares)		185,173
Share-based compensation	1,879		1,879
Net income (loss)	2,625				2,625
Cumulative translation adjustment	(628)			(628)
Balance at Mar. 31, 2020	$ 59,877	$ 91	$ 542,126	$ (779)	$ (481,561)
Balance (in shares) at Mar. 31, 2020	88,521,511	90,516,626