Earnings per share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings per share

Schedule of calculation of basic and diluted net income per share

	Three months ended
	March 31,
		2020		2019
Numerator:
Net income (loss)	$	(16,926)	$	21,901
Denominator:
Weighted-average number of shares - basic		47,988,630		30,299,650
Dilutive securities - share-based awards		—		1,052,730
Dilutive securities - common stock warrants		—		109,316
Weighted-average number of shares - diluted		47,988,630		31,461,696
Net income (loss) per share - basic	$	(0.35)	$	0.72
Net income (loss) per share - diluted	$	(0.35)	$	0.70