Fair Value (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]



	Fair Value at										Fair Value at
Asset / (Liability) (dollars in thousands)	March 31, 2017										December 31, 2016
Asset / (Liability) (dollars in thousands)	Level 1		Level 2			Level 3		Total			Level 1		Level 2			Level 3		Total
Commodity futures natural gas contracts	$	—	$	388		$	—	$	388		$	—	$	1,508		$	—	$	1,508
Interest rate swap	—		(1,246		)	—		(1,246		)	—		(2,035		)	—		(2,035		)
Net derivative asset (liability)	$	—	$	(858	)	$	—	$	(858	)	$	—	$	(527	)	$	—	$	(527	)

Fair Value Disclosures, Carrying Value and Estimated Fair Value of Debt Instruments [Table Text Block]

Financial instruments carried at cost on the Condensed Consolidated Balance Sheets, as well as the related fair values, are as follows:



		March 31, 2017				December 31, 2016
(dollars in thousands)	Fair Value Hierarchy Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Term Loan B	Level 2	$	402,900	$	404,915	$	409,000	$	412,068

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

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