Basic and diluted earnings per share (Tables)

3 Months Ended

Mar. 31, 2020

Basic and diluted earnings per share

Schedule of potential dilutive common shares

	March 31,
	2020	2019
	(ordinary shares)
BMS warrants	10,262,500	8,830,000
Stock options under 2014 Plans	3,003,430	2,969,444
Non-vested RSUs and earned PSUs	635,390	864,942
Stock options under previous option plan	14,000	14,000
Employee share purchase plan	681	471
Total potential dilutive ordinary shares	13,916,001	12,678,857