Quarterly report pursuant to Section 13 or 15(d)

Stockholders' equity

Stockholders' equity
6 Months Ended
Jun. 30, 2015
Equity [Abstract]  
Stockholders' equity
Stockholders’ equity:
The Company is authorized by its amended and restated certificate of incorporation to issue up to 75,000,000 shares of Common Stock, par value $0.0001 per share, and 10,000,000 shares of preferred stock, par value $0.0001 per share. As of June 30, 2015 and December 31, 2014, there were 24,972,515 and 24,940,195, outstanding shares of Common Stock, respectively, and no outstanding shares of preferred stock.