Commitments and Contingencies - Operating Leases Additional Information (Details) - USD ($)			12 Months Ended
	Dec. 16, 2009	Oct. 08, 1996	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Feb. 01, 2017	Jan. 09, 2017
Operating Leased Assets [Line Items]
Rental expense			$ 1,200,000	$ 1,000,000	$ 1,300,000
Total lease payments over the lease term			2,242,000
Bud H. Harris
Operating Leased Assets [Line Items]
Total lease payments over the lease term			33,000
Operating lease, term		10 years
Operating lease, improvement allowance		$ 70,000
Chelmsford Associates, LLC
Operating Leased Assets [Line Items]
Total lease payments over the lease term			1,200,000
Operating lease, term	5 years 6 months
Operating leases, renewal term	5 years
Operating lease, rent abatement	$ 214,067
Mirobin Ltd
Operating Leased Assets [Line Items]
Total lease payments over the lease term			$ 400,000
Subsequent Event | George DiRado
Operating Leased Assets [Line Items]
Total lease payments over the lease term						$ 600,000	$ 100,000