Income Taxes (Tables)

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Summary of Income Tax Expense and Effective Tax Rate

Income tax expense and the effective tax rate for the three months ended March 31, 2019 and 2018 were as follows (dollar amounts in thousands):

	Three Months Ended March 31,
	2019			2018
Income tax expense	$	31,724		$	14,621
Effective tax rate		19.5	%		9.6	%