Derivatives (Tables)

6 Months Ended

Jun. 30, 2013

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, 2013			December 31, 2012
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	$	298
Total designated		—			298
Derivatives not designated as hedging instruments under FASB ASC 815:
Currency contracts	Prepaid and other current assets	458		Prepaid and other current assets	41
Total undesignated		458			41
Total		$	458		$	339
	Liability Derivatives:
(dollars in thousands)	June 30, 2013			December 31, 2012
Derivatives designated as hedging instruments under FASB ASC 815:	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Natural gas contracts	Derivative liability	$	69	Derivative liability	$	420
Natural gas contracts	Other long-term liabilities	43		Other long-term liabilities	—
Interest rate contract	Other long-term liabilities	1,781		Other long-term liabilities	—
Total designated		1,893			420
Total		$	1,893		$	420

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

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

	Three months ended June 30,						Six months ended June 30,
(dollars in thousands)	2013			2012			2013			2012
Interest rate swap	$	(1,723	)	$	(352	)	$	(2,079	)	$	(339	)
Related long-term debt	1,376			3,681			1,510			4,087
Net impact	$	(347	)	$	3,329		$	(569	)	$	3,748

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 Operations as follows:

	Three months ended June 30,						Six months ended June 30,
(dollars in thousands)	2013			2012			2013			2012
Loss on redemption of debt	$	—		$	3,502		$	—		$	3,502
Other income (expense)	(347		)	(173		)	(569		)	246
Net impact	$	(347	)	$	3,329		$	(569	)	$	3,748

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 Operations:

		Three months ended June 30,					Six months ended June 30,
(dollars in thousands)		2013		2012			2013		2012
Derivative:	Location:
Natural gas contracts	Cost of sales	$	252	$	(1,736	)	$	6	$	(3,196	)
Total impact on net income (loss)		$	252	$	(1,736	)	$	6	$	(3,196	)

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)	2013			2012		2013		2012
Derivatives in Cash Flow Hedging relationships:
Natural gas contracts	$	(377	)	$	586	$	590	$	(1,518	)
Total	$	(377	)	$	586	$	590	$	(1,518	)

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)		2013		2012		2013		2012
Derivative:	Location:
Currency contracts	Other income (expense)	$	166	$	132	$	417	$	(30	)
Total		$	166	$	132	$	417	$	(30	)