Interest Expense

12 Months Ended

Dec. 31, 2015

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,				For the Period January 1 Through August 14, 2015		For the Period August 15 Through December 31, 2015
	2013		2014
	(Dollars in thousands)
Interest incurred on debt	$	21,589	$	21,373	$	12,973	$	8,611
Amortization of discount on     Senior Subordinated Notes	11,493		12,298		12,027		—
Accretion of fair value adjustment     on Senior Notes	—		—		—		2,305
Amortization of debt issuance costs	2,504		3,339		2,118		—
Supply Chain Financing mark-up	451		47		—		—
Total interest expense	$	36,037	$	37,057	$	27,118	$	10,916

Interest rates

The Revolving Facility had an effective interest rate of 2.17% and 2.68% as of December 31, 2014 and 2015, 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 6 "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.