Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2017		2016
Net income(1)	$	55,863	$	18,160
Weighted-average number of common shares outstanding (for basic calculation)	18,439		16,042
Dilutive securities(1)	1,110		828
Weighted-average common and common equivalent shares outstanding (for diluted calculation)(1)	19,549		16,870
EPS — basic	$	3.03	$	1.13
EPS — diluted	$	2.86	$	1.08

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⁽¹⁾ Net income, dilutive securities and weighted average common and common equivalent shares outstanding for the three months ended March 31, 2016 were adjusted from previously reported amounts due to the adoption of ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting in the second quarter of 2016 (see Note 1: Basis of Presentation).