Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of Operating Leases

As of December 31, 2014, the aggregate future minimum payments under non-cancelable operating leases consist of the following (in thousands):

Years Ending December 31,
2015	$	2,583
2016	4,297
2017	5,155
2018	5,378
2019	5,369
Thereafter	22,407
Total minimum future lease payments	$	45,189

Schedule of Lease Financing Obligations

As of December 31, 2014, the future minimum payments due under the lease financing obligation were as follows (in thousands):

Years Ending December 31,
2015	$	5,588
2016	5,754
2017	5,933
2018	6,113
2019	6,293
Thereafter	25,287
Total payments	54,968
Less: interest and land lease expense	(34,770		)
Total payments under facility financing obligations	20,198
Property reverting to landlord	23,436
Present value of obligation	43,634
Less current portion	(1,087		)
Long-term portion of obligation	$	42,547