Earnings per share (Tables)

12 Months Ended

Dec. 31, 2019

Schedule of Earnings Per Share Reconciliation [Table Text Block]

The following table presents our weighted-average basic and diluted shares outstanding:



	Year Ended December 31,
	2019	2018	2017
	(in thousands)

Weighted-average common shares outstanding - basic	64,032	66,059	65,837
Dilutive effect of:
RSUs and PSUs	—	173	—
Other equity-based awards	—	71	—
Weighted-average common shares and equivalents outstanding - diluted	64,032	66,303	65,837

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following table presents the weighted-average common share equivalents excluded from the calculation of diluted earnings per share due to their anti-dilutive effect:



	Year Ended December 31,
	2019	2018	2017
	(in thousands)

Weighted-average common share equivalents excluded from diluted earnings per share due to their anti-dilutive effect:
RSUs and PSUs	989	145	590
Other equity-based awards	302	109	75
Total anti-dilutive common share equivalents	1,291	254	665