Derivatives (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Assets and Liabilities at Fair Value [Table Text Block]

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

	Asset Derivatives:
(dollars in thousands)	June 30, 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	$	—	Derivative asset	$	3,606
Natural gas contracts	Derivative asset	10		Derivative asset	—
Total designated		10			3,606
Derivatives not designated as hedging instruments under FASB ASC 815:
Currency contracts	Prepaid and other current assets	36		Prepaid and other current assets	107
Total undesignated		36			107
Total		$	46		$	3,713
	Liability Derivatives:
(dollars in thousands)	June 30, 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	$	2,011	Derivative liability	$	3,390
Natural gas contracts	Other long-term liabilities	—		Other long-term liabilities	298
Interest rate contract	Other long-term liabilities	188		Other long-term liabilities	—
Total designated		2,199			3,688
Derivatives not designated as hedging instruments under FASB ASC 815:
Total undesignated		—			—
Total		$	2,199		$	3,688

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]

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

		Three months ended June 30,						Six months ended June 30,
(dollars in thousands)		2012			2011			2012			2011
Derivative:	Location:
Natural gas contracts	Cost of sales	$	(1,736	)	$	(1,213	)	$	(3,196	)	$	(2,042	)
Total impact on net (loss) income		$	(1,736	)	$	(1,213	)	$	(3,196	)	$	(2,042	)

The following table provides a summary of the gain (loss) recognized on the Condensed Consolidated Statements of Comprehensive Income (Loss):

	Three months ended June 30,						Six months ended June 30,
(dollars in thousands)	2012			2011			2012			2011
Interest rate swap	$	(352	)	$	1,443		$	(339	)	$	799
Related long-term debt	3,681			(1,587		)	4,087			(307		)
Net impact	$	3,329		$	(144	)	$	3,748		$	492

The gain or loss on the hedged long-term debt netted with the offsetting loss or gain on the related interest rate swap was recorded on the Condensed Consolidated Statements of Comprehensive Income (Loss) as follows:

	Three months ended June 30,						Six months ended June 30,
(dollars in thousands)	2012			2011			2012		2011
Loss on redemption of debt	$	3,502		$	—		$	3,502	$	—
Other (expense) income	(173		)	(144		)	246		492
Net impact	$	3,329		$	(144	)	$	3,748	$	492

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]

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

	Three months ended June 30,					Six months ended June 30,
(dollars in thousands)	2012		2011			2012			2011
Derivatives in Cash Flow Hedging relationships:
Natural gas contracts	$	586	$	(487	)	$	(1,518	)	$	(636	)
Total	$	586	$	(487	)	$	(1,518	)	$	(636	)

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

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

		Three months ended June 30,				Six months ended June 30,
(dollars in thousands)		2012		2011		2012			2011
Derivative:	Location:
Currency contracts	Other (expense) income	$	132	$	128	$	(30	)	$	(326	)
Total		$	132	$	128	$	(30	)	$	(326	)