Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of Calculation of Numerator and Denominator in EPS

The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share amounts):

	Year Ended December 31,
	2018		2017		2016
Numerator:
Net income	$	153,206	$	143,892	$	60,127
Denominator:
Weighted-average common shares for calculating basic earnings per share	44,777		47,854		34,997
Effect of dilutive securities:
Stock options and restricted stock unit awards	107		34		7
Weighted-average common shares for calculating diluted earnings per share	44,884		47,888		35,004
Earnings per share:
Basic	$	3.42	$	3.01	$	1.72
Diluted	3.41		3.00		1.72