Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

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

The reconciliations of the denominators of the basic and diluted earnings per share computations are as follows (in thousands):

	Years Ended December 31,
	2020	2019	2018
Weighted average common shares outstanding—basic	89,485	89,353	89,215
Dilutive potential common shares	160	206	132
Weighted average common shares outstanding—diluted	89,645	89,559	89,347