Income Taxes (Tables)

6 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Summary of Tax Expense and Effective Tax Rates

Income tax expense and effective tax rates were:

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
	(in thousands, except effective tax rate)
Income before income taxes	$	44,676		$	37,377		$	75,005		$	64,589
Income tax expense	5,478			3,000			11,097			13,758
Effective tax rate	12.3		%	8.0		%	14.8		%	21.3		%