Restricted Cash

9 Months Ended

Sep. 30, 2017

Receivables [Abstract]

Restricted Cash

6. Restricted Cash

Restricted cash consists of deposits securing collateral letters of credit issued in connection with the Company’s operating leases. As of September 30, 2017 and December 31, 2016, the Company had restricted cash of $2,305,000 and $1,395,000, respectively.