Income Taxes (Tables)

9 Months Ended

Sep. 30, 2016

Income Tax Disclosure [Abstract]

Income tax expense (benefit)

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

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2016			2015		2016			2015
Income before provision for income taxes	$	39,023		$	29,804	$	121,119		$	94,774
Income tax expense using estimated annual effective income tax rate	15,306			11,743		47,474			37,426
Changes in effective tax rates	(1,149		)	1,539		—			—
Impact of discrete items, net	(841		)	412		(792		)	313
Income tax expense	$	13,316		$	13,694	$	46,682		$	37,739