Common stock (Tables)

12 Months Ended

Dec. 31, 2014

Common stock.

Schedule of common stock issued

        During the year ended December 31, 2014 the Company issued 643,511 shares of common stock as follows:

Restricted stock grants	(243	)
Employee option exercises	564,077
Warrant exercises	79,677
Total common stock issued	643,511

        During the year ended December 31, 2013 the Company issued 1,378,631 shares of common stock as follows:

Restricted stock grants	860,739
Employee option exercises	304,769
Warrant exercises	213,123
Total common stock issued	1,378,631

       During the year ended December 31, 2012, the Company issued 1,894,452 shares of common stock as follows:

Inter-Atlantic warrant exercise	917,602
Employee option exercises	488,513
Consideration shares upon acquisition of BPS	488,337
Total common stock issued	1,894,452