Derivatives (Tables)

9 Months Ended

Sep. 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)	September 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	$	394	Derivative asset	$	3,606
Natural gas contracts	Derivative asset	36		Derivative asset	—
Total designated		430			3,606
Derivatives not designated as hedging instruments under FASB ASC 815:
Currency contracts	Prepaid and other current assets	—		Prepaid and other current assets	107
Total undesignated		—			107
Total		$	430		$	3,713
	Liability Derivatives:
(dollars in thousands)	September 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	$	276	Derivative liability	$	3,390
Natural gas contracts	Other long-term liabilities	—		Other long-term liabilities	298
Total designated		276			3,688
Derivatives not designated as hedging instruments under FASB ASC 815:
Currency contracts	Derivative liability	155		Derivative liability	—
Total undesignated		155			—
Total		$	431		$	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:

		Three months ended September 30,						Nine months ended September 30,
(dollars in thousands)		2012			2011			2012			2011
Derivative:	Location:
Natural gas contracts	Cost of sales	$	(1,088	)	$	(1,340	)	$	(4,284	)	$	(3,382	)
Total impact on net income (loss)		$	(1,088	)	$	(1,340	)	$	(4,284	)	$	(3,382	)

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

	Three months ended September 30,						Nine months ended September 30,
(dollars in thousands)	2012			2011			2012		2011
Interest rate swap	$	582		$	740		$	243	$	1,539
Related long-term debt	(1,248		)	(535		)	2,839		(842		)
Net impact	$	(666	)	$	205		$	3,082	$	697

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

	Three months ended September 30,					Nine months ended September 30,
(dollars in thousands)	2012			2011		2012			2011
Loss on redemption of debt	$	—		$	—	$	3,502		$	—
Other income (expense)	(666		)	205		(420		)	697
Net impact	$	(666	)	$	205	$	3,082		$	697

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 September 30,					Nine months ended September 30,
(dollars in thousands)	2012		2011			2012			2011
Derivatives in Cash Flow Hedging relationships:
Natural gas contracts	$	682	$	(1,587	)	$	(836	)	$	(2,223	)
Total	$	682	$	(1,587	)	$	(836	)	$	(2,223	)

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 September 30,					Nine months ended September 30,
(dollars in thousands)		2012			2011		2012			2011
Derivative:	Location:
Currency contracts	Other income (expense)	$	(190	)	$	934	$	(220	)	$	608
Total		$	(190	)	$	934	$	(220	)	$	608