Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings per share

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended
	March 31,
	2020		2019
Net income (loss)	$	(9,232)	$	5,019
Net income (loss) attributable to noncontrolling interest		(16)		298
Net income (loss) attributable to common stockholders	$	(9,216)	$	4,721
Basic weighted average of outstanding shares of common stock		49,217		48,394
Dilutive effect of equity awards		—		997
Diluted weighted average of outstanding shares of common stock		49,217		49,391
Basic earnings (loss) per share	$	(0.19)	$	0.10
Diluted earnings (loss) per share	$	(0.19)	$	0.10