Net Income (Loss) Per Common Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Net Income (Loss) Per Common Share

5. Net income (loss) per common share:

Basic net income (loss) per common share is computed by dividing the net income (loss) attributable to common shareholders by the weighted average number of common shares outstanding for the period. Diluted net income (loss) per common share is computed by adjusting net income (loss) attributable to common shareholders to reallocate undistributed earnings based on the potential impact of dilutive securities.

Prior to the Company’s IPO, net income (loss) per share was calculated under the two-class method as the Company had outstanding shares that met the definition of participating securities. The two-class method determines net income (loss) per share for each class of common and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The two-class method requires income available to common shareholders for the period to be allocated between common and participating securities based upon their respective rights to receive dividends as if all income for the period had been distributed. All of the outstanding redeemable convertible preferred shares converted to common shares upon the consummation of the Company’s IPO.

As the Company reported a net loss attributable to common shareholders for the three months ended March 31, 2015 and no net income was attributable to common shareholders for the three months ended March 31, 2014, all stock options were anti-dilutive and were excluded from the diluted weighted average shares outstanding for both periods.