Connecticut Innovations, Inc. Stock Warrant
12 Months Ended
Dec. 31, 2016
Text Block [Abstract]  
Connecticut Innovations, Inc. Stock Warrant

9. Connecticut Innovations, Inc. Stock Warrant

In September 2007, the Company entered into a $4,000 term loan, or Loan, with Connecticut Innovations Inc., or CII, which was repaid in April 2013. In connection with the Loan, the Company issued to CII a warrant to purchase 19,851 shares of common stock at an exercise price of $10.08. On July 31, 2014, CII exercised its outstanding warrant in a cashless exercise, resulting in the issuance of 6,383 shares of the Company’s common stock.