Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

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

The following table presents the calculation of net earnings per common share (“EPS”) — basic and diluted (in thousands, except per share data): 

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Net income	$	18,908	$	22,833	$	35,742	$	53,831
Weighted-average number of common shares outstanding (for basic calculation)	20,880		20,622		20,831		20,577
Dilutive securities	626		898		714		969
Weighted-average common and common equivalent shares outstanding (for diluted calculation)	21,506		21,520		21,545		21,546
EPS — basic	$	0.91	$	1.11	$	1.72	$	2.62
EPS — diluted	$	0.88	$	1.06	$	1.66	$	2.50