Derivatives (Tables)

12 Months Ended

Dec. 31, 2013

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, 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
Natural gas contracts	Prepaid and other current assets	394		Prepaid and other current assets	—
Natural gas contracts	Derivative asset	19		Derivative asset	—
Total designated		413			298
Derivatives not designated as hedging instruments under FASB ASC 815:
Currency contracts	Prepaid and other current assets	—		Prepaid and other current assets	41
Total undesignated		—			41
Total		$	413		$	339
	Liability Derivatives:
(dollars in thousands)	December 31, 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 - current	$	—	Derivative liability - current	$	420
Interest rate contract	Other long-term liabilities	1,866		Other long-term liabilities	—
Total designated		1,866			420
Derivatives not designated as hedging instruments under FASB ASC 815:
Interest rate contract	Other long-term liabilities	207		Other long-term liabilities	—
Total undesignated		207			—
Total		$	2,073		$	420

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

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:	2013			2012			2011
Natural gas contracts	Cost of sales	$	(57	)	$	(4,707	)	$	(4,639	)
Total impact on net income (loss)		$	(57	)	$	(4,707	)	$	(4,639	)

The following table provides a summary of the gain (loss) recognized in the Consolidated Statements of Operations from the designated portion of our New Rate Agreement:

Year ended December 31, (dollars in thousands)	2013			2012		2011
Interest rate swap - designated	$	1,732		$	147	$	1,070
Related long-term debt	(2,164		)	3,635		(777		)
Net impact	$	(432	)	$	3,782	$	293

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)	2013		2012			2011
Derivatives in Cash Flow Hedging relationships:
Natural gas contracts	$	777	$	(1,439	)	$	(5,263	)
Total	$	777	$	(1,439	)	$	(5,263	)

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:	2013			2012			2011
Currency contracts	Other income (expense)	$	(41	)	$	(24	)	$	257
Total		$	(41	)	$	(24	)	$	257