Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Computation of Basic Earnings and Diluted Earnings Per Share Data

The following table details the reconciliation of basic earnings per share to diluted earnings per share:

	Three Months ended March 31,
	2017		2016
Numerator for basic and diluted earnings per share:
Net income	$	32,306	$	18,224
Denominator:
Weighted-average basic common shares outstanding	36,845		36,549
Assumed conversion of dilutive securities:
Stock options	2,087		2,522
Denominator for diluted earnings per share    - Adjusted weighted-average shares	38,932		39,071
Earnings per common share:
Basic	$	0.88	$	0.50
Diluted	$	0.83	$	0.47