Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Detail) shares in Thousands	Jun. 30, 2015 shares
Class of Stock [Line Items]
Total common stock reserved for issuance, shares	2,222
Stock based awards outstanding [Member]
Class of Stock [Line Items]
Total common stock reserved for issuance, shares	1,687
Stock based awards available for grant [Member]
Class of Stock [Line Items]
Total common stock reserved for issuance, shares	289
Employee stock purchase plan shares available for purchase [Member]
Class of Stock [Line Items]
Total common stock reserved for issuance, shares	246