Income Taxes Income Taxes (Tables)

6 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Summary of Tax Expense and Effective Tax Rates

Income tax expense and effective tax rates were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(in thousands, except effective tax rate)
Income before income taxes	$	29,586		$	18,646		$	45,534		$	31,697
Income tax expense	7,627			3,109			12,564			6,014
Effective tax rate	25.8		%	16.7		%	27.6		%	19.0		%