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Income Taxes (Tables)

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Tax Expense From Continuing Operations And The Effective Tax Rate

The following table presents income tax expense and the effective tax rate:

	Three Months Ended June 30,								Six Months Ended June 30,
	2018				2017				2018				2017
	(Dollars in thousands)
Income tax expense	$	36,527			$	36,772			$	54,699			$	67,909
Effective tax rate	22		%		23		%		17		%		22		%

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Schedule of Effective Income Tax Rate and Expenses [Table Text Block]

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