Basic and diluted earnings per share (Tables)

3 Months Ended

Mar. 31, 2018

Basic and diluted earnings per share

Schedule of potential dilutive common shares

	Three months ended March 31,
	2018	2017
	ordinary shares
BMS warrants	6,950,000	3,587,333
Stock options under 2014 Plan and Nasdaq inducement rules	2,876,475	2,605,443
Non-vested RSUs and earned PSUs	1,104,771	620,252
Stock options under 2012 Plan	63,818	348,032
Warrants	37,175	37,175
Total potential dilutive ordinary shares	11,032,239	7,198,235