Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2018

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 March 31,
	2018		2017
Net income	$	4,875	$	55,863
Weighted-average number of common shares outstanding (for basic calculation)	20,255		18,439
Dilutive securities	1,145		1,110
Weighted-average common and common equivalent shares outstanding (for diluted calculation)	21,400		19,549
EPS — basic	$	0.24	$	3.03
EPS — diluted	$	0.23	$	2.86