Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Continuing Operations	Continuing Operations Additional Paid-in Capital	Discontinued Operations	Discontinued Operations Additional Paid-in Capital
Beginning balance (in shares) at Jun. 30, 2018		44,871,000
Beginning balance at Jun. 30, 2018	$ 108,883	$ 45	$ 167,895	$ (1,855)	$ (57,202)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		5,000
Issuance of common stock upon exercise of stock options	25	$ 0	25
Release of restricted stock units (in shares)		385,000
Release of restricted stock units	(1,205)	$ 0	(1,205)
Stock-based compensation expense						$ 2,048	$ 2,048	$ 221	$ 221
Foreign currency translation adjustment, net of tax	(217)			(217)
Unrealized net gain (loss) on available-for-sale securities, net of tax	91			91
Net income (loss)	(7,570)				(7,570)
Ending balance (in shares) at Sep. 30, 2018		45,261,000
Ending balance at Sep. 30, 2018	102,276	$ 45	168,984	(1,981)	(64,772)
Beginning balance (in shares) at Jun. 30, 2018		44,871,000
Beginning balance at Jun. 30, 2018	108,883	$ 45	167,895	(1,855)	(57,202)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(19,632)
Ending balance (in shares) at Mar. 31, 2019		45,643,000
Ending balance at Mar. 31, 2019	93,897	$ 46	172,997	(1,723)	(77,423)
Beginning balance (in shares) at Sep. 30, 2018		45,261,000
Beginning balance at Sep. 30, 2018	102,276	$ 45	168,984	(1,981)	(64,772)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		0
Issuance of common stock upon exercise of stock options	1	$ 0	1
Release of restricted stock units (in shares)		280,000
Release of restricted stock units	(352)	$ 1	(353)
Stock-based compensation expense						1,875	1,875	240	240
Foreign currency translation adjustment, net of tax	(131)			(131)
Unrealized net gain (loss) on available-for-sale securities, net of tax	102			102
Net income (loss)	(4,581)				(4,581)
Ending balance (in shares) at Dec. 31, 2018		45,541,000
Ending balance at Dec. 31, 2018	99,430	$ 46	170,747	(2,010)	(69,353)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		244,000
Issuance of common stock upon exercise of stock options	1,330	$ 0	1,330
Release of restricted stock units (in shares)		79,000
Release of restricted stock units	(273)	$ 0	(273)
Repurchases of common stock (in shares)		(221,000)
Repurchases of common stock	(1,303)		(714)		(589)
Stock-based compensation expense	1,907		1,907
Foreign currency translation adjustment, net of tax	(54)			(54)
Unrealized net gain (loss) on available-for-sale securities, net of tax	341			341
Net income (loss)	(7,481)				(7,481)
Ending balance (in shares) at Mar. 31, 2019		45,643,000
Ending balance at Mar. 31, 2019	93,897	$ 46	172,997	(1,723)	(77,423)
Beginning balance (in shares) at Jun. 30, 2019		46,911,000
Beginning balance at Jun. 30, 2019	90,640	$ 47	182,349	(1,477)	(90,279)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		1,326,000
Issuance of common stock upon exercise of stock options	8,341	$ 1	8,340
Release of restricted stock units (in shares)		329,000
Release of restricted stock units	(1,272)	$ 1	(1,273)
Stock-based compensation expense						$ 1,752	$ 1,752	$ 887	$ 887
Foreign currency translation adjustment, net of tax	(310)			(310)
Unrealized net gain (loss) on available-for-sale securities, net of tax	58			58
Net income (loss)	(3,954)				(3,954)
Ending balance (in shares) at Sep. 30, 2019		48,566,000
Ending balance at Sep. 30, 2019	96,142	$ 49	192,055	(1,729)	(94,233)
Beginning balance (in shares) at Jun. 30, 2019		46,911,000
Beginning balance at Jun. 30, 2019	$ 90,640	$ 47	182,349	(1,477)	(90,279)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	1,343,000
Repurchases of common stock (in shares)	(1,692,207)
Repurchases of common stock			(5,800)		(3,600)
Net income (loss)	$ 8,319
Ending balance (in shares) at Mar. 31, 2020		47,288,000
Ending balance at Mar. 31, 2020	101,909	$ 47	189,387	(2,004)	(85,521)
Beginning balance (in shares) at Sep. 30, 2019		48,566,000
Beginning balance at Sep. 30, 2019	96,142	$ 49	192,055	(1,729)	(94,233)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		0
Issuance of common stock upon exercise of stock options	0	$ 0	0
Release of restricted stock units (in shares)		352,000
Release of restricted stock units	(317)	$ 0	(317)
Repurchases of common stock (in shares)		(767,000)
Repurchases of common stock	(4,019)	$ (1)	(2,623)		(1,395)
Stock-based compensation expense	1,478		1,478
Foreign currency translation adjustment, net of tax	207			207
Unrealized net gain (loss) on available-for-sale securities, net of tax	(16)			(16)
Net income (loss)	13,006				13,006
Ending balance (in shares) at Dec. 31, 2019		48,151,000
Ending balance at Dec. 31, 2019	106,481	$ 48	190,593	(1,538)	(82,622)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		17,000
Issuance of common stock upon exercise of stock options	84	$ 0	84
Release of restricted stock units (in shares)		45,000
Release of restricted stock units	$ (82)	$ 0	(82)
Repurchases of common stock (in shares)	(925,624)	(925,000)
Repurchases of common stock	$ (5,334)	$ (1)	(3,167)		(2,166)
Stock-based compensation expense	1,959		1,959
Foreign currency translation adjustment, net of tax	(164)			(164)
Unrealized net gain (loss) on available-for-sale securities, net of tax	(302)			(302)
Net income (loss)	(733)				(733)
Ending balance (in shares) at Mar. 31, 2020		47,288,000
Ending balance at Mar. 31, 2020	$ 101,909	$ 47	$ 189,387	$ (2,004)	$ (85,521)