Interest Expense

12 Months Ended

Dec. 31, 2016

Interest and Debt Expense [Abstract]

Interest Expense

Interest Expense

The following table presents an analysis of interest expense:

	Predecessor				Successor
	For the year Ended December 31,2014		For the Period January 1 Through August 14, 2015		For the Period August 15 Through December 31, 2015		For the year Ended December 31,2016
	(Dollars in thousands)
Interest incurred on debt	$	20,099	$	12,066	$	7,694	$	20,408
Amortization of discount on     Senior Subordinated Notes	12,298		12,027		—		—
Accretion of fair value adjustment     on Senior Notes	—		—		2,305		6,305
Amortization of debt issuance costs	3,339		2,118		—		201
Total interest expense	$	35,736	$	26,211	$	9,999	$	26,914

Interest rates

The Revolving Facility had an effective interest rate of 2.68% and 5.52% as of December 31, 2015 and 2016, respectively. The Senior Notes carry an interest rate of 6.375%. The Senior Subordinated Notes had an implied rate of 7.00%.

On August 11, 2015, we prepaid our Senior Subordinated Notes (see Note 7 "Debt and Liquidity"). This prepayment resulted in accelerated amortization of $4.5 million as the Notes were prepaid at the face value. The accelerated expense was recorded in the predecessor period.