Derivatives (Tables)

12 Months Ended

Dec. 31, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Values of Derivative Instruments

The following table provides the fair values of our derivative financial instruments for the periods presented:

	Asset Derivatives:
(dollars in thousands)	December 31, 2012			December 31, 2011
Derivatives designated as hedging instruments under FASB ASC 815:	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Interest rate contract	Derivative asset	$	298	Derivative asset	$	3,606
Total designated		298			3,606
Derivatives not designated as hedging instruments under FASB ASC 815:
Currency contracts	Prepaid and other current assets	41		Prepaid and other current assets	107
Total undesignated		41			107
Total		$	339		$	3,713
	Liability Derivatives:
(dollars in thousands)	December 31, 2012			December 31, 2011
Derivatives designated as hedging instruments under FASB ASC 815:	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Natural gas contracts	Derivative liability - current	$	420	Derivative liability - current	$	3,390
Natural gas contracts		—		Other long-term liabilities	298
Total designated		420			3,688
Total		$	420		$	3,688

Summary of the Gain (Loss) Recognized in the Statements of Operations

The following table provides a summary of the gain (loss) recognized in the Consolidated Statements of Operations:

Year ended December 31, (dollars in thousands)	2012		2011			2010
Interest rate swap	$	147	$	1,070		$	2,536
Related long-term debt	3,635		(777		)	(3,266		)
Net impact	$	3,782	$	293		$	(730	)

The following table provides a summary of the effective portion of derivative gain (loss) reclassified from accumulated other comprehensive loss to the Consolidated Statements of Operations:

Year ended December 31, (dollars in thousands)	Location:	2012			2011			2010
Natural gas contracts	Cost of sales	$	(4,707	)	$	(4,639	)	$	(8,962	)
Total impact on net income (loss)		$	(4,707	)	$	(4,639	)	$	(8,962	)

Summary of the Effective Portion of Derivative Gain (Loss) Recognized in Other Comprehensive Income (Loss)

The following table provides a summary of the effective portion of derivative gain (loss) recognized in other comprehensive income (loss):

Year ended December 31, (dollars in thousands)	2012			2011			2010
Derivatives in Cash Flow Hedging relationships:
Natural gas contracts	$	(1,439	)	$	(5,263	)	$	(6,362	)
Total	$	(1,439	)	$	(5,263	)	$	(6,362	)

Summary of Derivatives Not Designated as Hedging Instruments Recognized in the Statements of Operations

Gains (losses) for derivatives that were not designated as hedging instruments are recorded in current earnings as follows:

Year ended December 31, (dollars in thousands)	Location:	2012			2011		2010
Currency contracts	Other income (expense)	$	(24	)	$	257	$	(150	)
Total		$	(24	)	$	257	$	(150	)