Income Taxes (Tables)

6 Months Ended

Jun. 30, 2016

Income Tax Disclosure [Abstract]

Income tax expense (benefit)

The Company's income tax expense consisted of the following:

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2016		2015			2016		2015
Income before provision for income taxes	$	46,340	$	30,622		$	82,096	$	64,970
Income tax expense using estimated annual effective income tax rate	18,793		11,347			33,317		24,145
Changes in effective tax rates	210		(78		)	—		—
Impact of discrete items, net	—		(91		)	49		(100		)
Income tax expense	$	19,003	$	11,178		$	33,366	$	24,045