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Restricted Cash	12 Months Ended
Restricted Cash	Dec. 31, 2016
Restricted Cash
Restricted Cash	5. Restricted Cash At December 31, 2016 and 2015, the Company had an outstanding letter of credit for $0.1 million as a security deposit for its operating lease agreement for office space (Note 9). The Company is required to maintain this deposit for the duration of the lease agreement.