Net Earnings Per Share Net Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

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

Net Earnings Per Share

The following table sets forth the reconciliation of the numerator and denominator utilized in the computation of basic and diluted earnings per share (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Numerator for earnings per share:
Net earnings for basic and diluted earnings per share	$	63,529	$	58,633	$	157,513	$	105,126
Denominator for earnings per share:
Weighted average number of common shares outstanding	137,849		136,963		137,030		137,438
Assumed exercise of stock options and vesting of restricted stock awards, net of shares assumed reacquired under the treasury stock method	1,570		975		1,823		1,156
Diluted shares outstanding	139,419		137,938		138,853		138,594