Commitments and Contingencies (Details) $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 12, 2013 USD ($) ft² option facility	Dec. 31, 2014 lease	Jun. 30, 2015 USD ($) letters_of_credit	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) letters_of_credit	Jun. 30, 2014 USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Remainder of 2015			$ 1,271		$ 1,271
2016			2,363		2,363
2017			2,331		2,331
2018			2,258		2,258
2019			2,296		2,296
2020			2,388		2,388
2021 and thereafter			22,884		22,884
Total			35,791		35,791
Rent expense			$ 600	$ 700	$ 1,200	$ 1,300
Number of facilities | facility	2
Aggregate square feet | ft²	129,000
Term of contract	15 years
Number of renewal options | option	1
Renewal term	5 years
Initial base rent	$ 1,900
Landlord-funded improvements	$ 6,800
Number of letters of credit | letters_of_credit			2		2
Number of leases exited | lease		1
Operating Leases, Future Minimum Payments Due, Base Rent Increases [Abstract]
2015	3.00%
2016	3.00%
2017	3.00%
2018	3.00%
2019	3.00%
2020 and beyond	4.00%
Manufacturing Facility
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Aggregate square feet | ft²	57,000
Building
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Aggregate square feet | ft²	2,900