Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income
Beginning Balance (in shares) at Jun. 30, 2013		30,381,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock incentive plans (in shares)		811,000
Issuance of common stock under employee stock incentive plans	$ 706	$ 8	$ 698
Beginning Balance at Jun. 30, 2013	328,501	$ 304	231,711	$ 95,524	$ 962
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock purchase plan (in shares)		92,000
Issuance of common stock under employee stock purchase plan	778	$ 0	778
Stock-based compensation	9,244		9,244
Tax shortfall from employee stock plan awards	(706)		(706)
Net income (loss)	(11,425)			(11,425)
Net unrealized gain (loss) on investments	(16)				(16)
Foreign currency translation adjustments	65				65
Ending Balance (in shares) at Jun. 30, 2014		31,284,000
Ending Balance at Jun. 30, 2014	327,147	$ 312	241,725	84,099	1,011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock incentive plans (in shares)		1,275,000
Issuance of common stock under employee stock incentive plans	3,710	$ 13	3,697
Issuance of common stock under employee stock purchase plan (in shares)		79,000
Issuance of common stock under employee stock purchase plan	838	$ 1	837
Stock Repurchased and Retired During Period, Shares		(67,000)
Stock Repurchased and Retired During Period, Value	(944)		(944)
Stock-based compensation	8,728		8,728
Tax benefit from employee stock plan awards	525		525
Net income (loss)	10,369			10,369
Net unrealized gain (loss) on investments	0
Foreign currency translation adjustments	$ (235)				(235)
Ending Balance (in shares) at Jun. 30, 2015	32,570,959	32,571,000
Ending Balance at Jun. 30, 2015	$ 350,138	$ 326	254,568	94,468	776
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock incentive plans (in shares)		1,267,000
Issuance of common stock under employee stock incentive plans	6,879	$ 12	6,867
Issuance of common stock under employee stock purchase plan (in shares)		88,000
Issuance of common stock under employee stock purchase plan	1,218	$ 1	1,217
Stock Repurchased and Retired During Period, Shares		(426,000)
Stock Repurchased and Retired During Period, Value	(7,955)	$ (4)	(7,951)
Stock Issued During Period, Shares, New Issues		5,175,000
Stock Issued During Period, Value, New Issues	92,778	$ 52	92,726
Stock-based compensation	9,666		9,666
Net income (loss)	19,742			19,742
Share-based business combination consideration	407		407
Net unrealized gain (loss) on investments	0
Foreign currency translation adjustments	$ 171				171
Ending Balance (in shares) at Jun. 30, 2016	38,675,340	38,675,000
Ending Balance at Jun. 30, 2016	$ 473,044	$ 387	$ 357,500	$ 114,210	$ 947