Commitments and Contingencies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	May 31, 2016	Dec. 31, 2015
Other Commitments [Line Items]
Capitalized Lease renovation expenses	$ 1,433	$ 1,433		$ 1,263
Lease minimum rental payment	9,467	9,467
Stamford Operating Lease [Member]
Other Commitments [Line Items]
Capitalized Lease renovation expenses	1,094	1,094
Lease minimum rental payment	8,268	8,268
Shelton Operating Lease [Member]
Other Commitments [Line Items]
Net book value of leasehold improvements	0	0
Additional amortization expense	$ 359	$ 899
Additional loss per share	$ 0.01	$ 0.03
Accrued cease use date liability	$ 1,232	$ 1,232	$ 1,312
Accumulated deferred lease obligation, written off	429	429
Lease minimum rental payment	$ 1,199	$ 1,199