Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Net income	$	136	$	18,806	$	18,939	$	53,572
Weighted-average number of common shares outstanding (for basic calculation)	19,984		16,200		19,433		16,113
Dilutive securities	1,122		1,086		1,170		987
Weighted-average common and common equivalent shares outstanding (for diluted calculation)	21,106		17,286		20,603		17,100
EPS — basic	$	0.01	$	1.16	$	0.97	$	3.32
EPS — diluted	$	0.01	$	1.09	$	0.92	$	3.13