Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended			46 Months Ended
	Feb. 29, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Rent expenses		$ 8,610	$ 8,511	$ 5,672
Rental income under sublease agreement		1,486	$ 908	$ 365
Future rental income under sublease agreements, 2016		741			$ 741
Future rental income under sublease agreements, 2017		96			96
Licensing and Patent Infringement Suit
Loss Contingencies [Line Items]
Cumulative payments for royalties					3,270
Royalty payments not yet deposited		$ 2,859			$ 2,859
Subsequent Event | Licensing and Patent Infringement Suit
Loss Contingencies [Line Items]
Damages awarded to (against) TransOva	$ 528
Subsequent Event | XY, LLC | Licensing and Patent Infringement Suit
Loss Contingencies [Line Items]
Damages awarded to (against) TransOva	$ (6,066)