Earnings (Loss) per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings (Loss) per Share

Schedule of basic and diluted loss per share

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands, except share and per share data)	2018		2019		2018		2019
Net loss for the period	$	(17,788)	$	(21,707)	$	(31,130)	$	(41,924)
Weighted average number of shares outstanding		40,515,920		72,526,441		38,723,718		70,624,583
Basic and diluted loss per share	$	(0.44)	$	(0.30)	$	(0.80)	$	(0.59)

Schedule of ordinary share equivalents excluded from the calculations of diluted loss per share

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2019		2018		2019
Stock option awards		4,896,520		8,363,789		4,896,500		8,363,789
Restricted stock units		328,300		1,524,642		328,300		1,524,642