Commitments and Contingencies - Narrative (Details) - USD ($)	1 Months Ended		12 Months Ended
	Oct. 31, 2015	Dec. 31, 2002	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2016
Licenses, Royalties and Collaborative Agreements and Commitments
Purchase obligation, due in second year	$ 600,000		$ 2,268,000
Purchase obligation, renewal option, term	5 years
Purchase obligation, automatic renewal, term	5 years
Landlord contributions toward tenant improvements						$ 2,000,000
Tenant improvements			900,000
Rent expense			$ 4,800,000	$ 4,900,000	$ 2,500,000
Corning
Licenses, Royalties and Collaborative Agreements and Commitments
Royalty revenue as a percentage of net sales of products		5.00%
Corning | Maximum
Licenses, Royalties and Collaborative Agreements and Commitments
Future royalty revenue		$ 50,000,000