Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Contractual Obligations and Commitments Consisting of Future Minimum Lease Payments

Contractual obligations and commitments as of June 30, 2017, consisting of future minimum lease payments under the Company’s Stamford and Shelton leases, were as follows:

	Payment Due for the Year Ending December 31,
	2017		2018		2019		2020		2021		Thereafter		Total
Stamford operating lease	$	392	$	1,093	$	1,217	$	1,241	$	1,266	$	2,348	$	7,557
Shelton operating lease		272		—		—		—		—		—		272
	$	664	$	1,093	$	1,217	$	1,241	$	1,266	$	2,348	$	7,829

Schedule of Reconciliation of Balances of Accrued Shelton Lease Cease-Use Liability

A reconciliation of the balances of the accrued Shelton Lease cease-use liability for the three and six months ended June 30, 2017 and 2016 is as follows:

Three Months Ended June 30,
2017				2016
Balance April 1, 2017	$	515		Balance, April 1, 2016	$	—
Charges		—		Charges		1,312
Rental payments		(247	)	Rental payments		(80	)
Interest accretion		8		Interest accretion		—
Balance June 30, 2017	$	276		Balance June 30, 2016	$	1,232
Six Months Ended June 30,
2017				2016
Balance, January 1, 2017	$	756		Balance January 1, 2016	$	—
Charges		—		Charges		1,312
Rental payments		(494	)	Rental payments		(80	)
Interest accretion		14		Interest accretion		—
Balance June 30, 2017	$	276		Balance June 30, 2016	$	1,232