Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit).	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Jun. 30, 2017	$ 52	$ 192,837	$ (45,276)		$ 147,613
Balance (in shares) at Jun. 30, 2017	51,738
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		32,378			32,378
Stock options exercised	$ 1	8,001			8,002
Stock options exercised (in shares)	839
Issuance of common stock upon vesting of restricted stock units (in shares)	452
Issuance of common stock under employee stock purchase plan		4,304			4,304
Issuance of common stock under employee stock purchase plan (in shares)	108
Net settlement for taxes and/or exercise price related to equity awards		(17,932)			(17,932)
Net settlement for taxes and/or exercise price related to equity awards (in shares)	(379)
Unrealized gains (losses) on securities, net of tax				$ (139)	(139)
Net income			38,598		38,598
Balance at Jun. 30, 2018	$ 53	219,588	(6,678)	(139)	212,824
Balance (in shares) at Jun. 30, 2018	52,758
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		41,525			41,525
Stock options exercised		4,882			4,882
Stock options exercised (in shares)	378
Issuance of common stock upon vesting of restricted stock units (in shares)	660
Issuance of common stock under employee stock purchase plan		5,982			5,982
Issuance of common stock under employee stock purchase plan (in shares)	116
Net settlement for taxes and/or exercise price related to equity awards		(29,004)			(29,004)
Net settlement for taxes and/or exercise price related to equity awards (in shares)	(395)
Repurchases of common shares		(34,991)			(34,991)
Repurchases of common shares (in shares)	(442)
Unrealized gains (losses) on securities, net of tax				251	251
Net income			53,823		53,823
Balance at Jun. 30, 2019	$ 53	207,982	99,817	112	$ 307,964
Balance (in shares) at Jun. 30, 2019	53,075				53,075
Increase (Decrease) in Stockholders' Equity
Cumulative effect of change in accounting policy (adoption of Topic 606)			52,672		$ 52,672
Stock-based compensation		49,890			49,890
Stock options exercised		3,079			3,079
Stock options exercised (in shares)	270
Issuance of common stock upon vesting of restricted stock units	$ 1	(1)
Issuance of common stock upon vesting of restricted stock units (in shares)	735
Issuance of common stock under employee stock purchase plan		8,901			8,901
Issuance of common stock under employee stock purchase plan (in shares)	97
Net settlement for taxes and/or exercise price related to equity awards		(41,944)			(41,944)
Net settlement for taxes and/or exercise price related to equity awards (in shares)	(385)
Unrealized gains (losses) on securities, net of tax				563	563
Net income			64,455		64,455
Balance at Jun. 30, 2020	$ 54	$ 227,907	$ 164,272	$ 675	$ 392,908
Balance (in shares) at Jun. 30, 2020	53,792				53,792