Derivatives (Tables)

9 Months Ended

Sep. 30, 2014

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, 2014			December 31, 2013
Derivatives designated as hedging instruments under FASB ASC 815:	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Natural gas contracts	Prepaid and other current assets	$	—	Prepaid and other current assets	$	394
Natural gas contracts	Other assets	—		Other assets	19
Total designated		—			413
Derivatives not designated as hedging instruments under FASB ASC 815:
Currency contracts	Prepaid and other current assets	274		Prepaid and other current assets	—
Total undesignated		274			—
Total		$	274		$	413
	Liability Derivatives:
(dollars in thousands)	September 30, 2014			December 31, 2013
Derivatives designated as hedging instruments under FASB ASC 815:	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Natural gas contracts	Accrued liabilities	$	438	Accrued liabilities	$	—
Natural gas contracts	Other long-term liabilities	68		Other long-term liabilities	—
Interest rate contract	Other long-term liabilities	—		Other long-term liabilities	1,866
Total designated		506			1,866
Derivatives not designated as hedging instruments under FASB ASC 815:
Interest rate contract	Other long-term liabilities	—		Other long-term liabilities	207
Total undesignated		—			207
Total		$	506		$	2,073

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 Operations:

		Three months ended September 30,					Nine months ended September 30,
(dollars in thousands)		2014			2013		2014		2013
Derivative:	Location:
Natural gas contracts	Cost of sales	$	(58	)	$	26	$	756	$	32
Total impact on net income (loss)		$	(58	)	$	26	$	756	$	32

The following table provides a summary of the gain (loss) recognized on the Condensed Consolidated Statements of Operations from the de-designated portion of our Rate Agreement:

	Three months ended September 30,					Nine months ended September 30,
(dollars in thousands)	2014		2013			2014			2013
Interest rate swap	$	—	$	(163	)	$	140		$	(163	)
Related long-term debt	—		—			(589		)	—
Net impact	$	—	$	(163	)	$	(449	)	$	(163	)

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

	Three months ended September 30,					Nine months ended September 30,
(dollars in thousands)	2014		2013			2014			2013
Interest rate swap	$	—	$	330		$	497		$	(1,749	)
Related long-term debt	—		(245		)	(735		)	1,265
Net impact	$	—	$	85		$	(238	)	$	(484	)

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

	Three months ended September 30,					Nine months ended September 30,
(dollars in thousands)	2014		2013			2014			2013
Loss on redemption of debt	$	—	$	—		$	(757	)	$	—
Other income (expense)	—		(78		)	70			(647		)
Net impact	$	—	$	(78	)	$	(687	)	$	(647	)

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)	2014			2013			2014			2013
Derivatives in Cash Flow Hedging relationships:
Natural gas contracts	$	(670	)	$	(78	)	$	(164	)	$	512
Total	$	(670	)	$	(78	)	$	(164	)	$	512

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

Gains (losses) on 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)		2014		2013			2014		2013
Derivative:	Location:
Currency contracts	Other income (expense)	$	461	$	(273	)	$	274	$	144
Total		$	461	$	(273	)	$	274	$	144