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Interest Expense (Tables)

3 Months Ended

Mar. 31, 2017

Interest and Debt Expense [Abstract]

Schedule Of Interest Expense

The following tables present the components of interest expense: 

	For the Three Months Ended March 31, 2016				For the Three Months Ended March 31, 2017
	(Dollars in thousands)
Interest incurred on debt	$	4,897			$	5,870
Accretion of fair value adjustment on    Senior Notes	1,563				1,599
Amortization of debt issuance costs	—				77
Total interest expense	$	6,460			$	7,546

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