Consolidated Statement of Changes in Stockholders' Equity - 6 months ended Dec. 31, 2017 - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Total
Balance at Jun. 30, 2017	$ 52	$ 192,837	$ (45,276)		$ 147,613
Balance (in shares) at Jun. 30, 2017	51,738				51,738
Increase (Decrease) in Stockholders' Equity
Stock-based compensation expense		15,328			$ 15,328
Stock options exercised	$ 1	5,739			5,740
Stock options exercised (in shares)	669
Issuance of common stock upon vesting of restricted stock units (in shares)	414
Issuance of common stock under employee stock purchase plan		2,045			2,045
Issuance of common stock under employee stock purchase plan (in shares)	53
Net settlement for taxes and/or exercise price related to equity awards		(13,437)			(13,437)
Net settlement for taxes and/or exercise price related to equity awards (in shares)	(284)
Unrealized losses on securities, net of tax				$ (110)	(110)
Net income			974		974
Balance at Dec. 31, 2017	$ 53	$ 202,512	$ (44,302)	$ (110)	$ 158,153
Balance (in shares) at Dec. 31, 2017	52,590				52,590