Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Derivative Instruments

Schedule of fair value of outstanding derivative contracts

		December 31
Asset Derivatives	Balance Sheet Locations	2015		2014
Derivatives designated as hedging instruments:
Foreign exchange contracts	Other current assets	$	411	$	1,665
Foreign exchange contracts	Other assets	6		182
Derivatives not designated as hedging instruments:
Foreign exchange contracts	Other current assets	51		308
Total asset derivatives		$	468	$	2,155

		December 31
Liability Derivatives	Balance Sheet Locations	2015		2014
Derivatives designated as hedging instruments:
Foreign exchange contracts	Accounts payable and accrued liabilities	$	13	$	—
Natural gas contracts	Accounts payable and accrued liabilities	586		427
Foreign exchange contracts	Accrued pension and other liabilities	3		—
Natural gas contracts	Accrued pension and other liabilities	89		372
Derivatives not designated as hedging instruments:
Foreign exchange contracts	Accounts payable and accrued liabilities	92		62
Total liability derivatives		$	783	$	861

Schedule of outstanding derivative contracts

	December 31
(in thousands except for mmbtu)	2015		2014		2013
Natural gas contracts (mmbtu)	955,000		810,000		525,000
Foreign exchange contracts	$	37,016	$	41,237	$	44,110

Schedule of gross and net amounts of derivative assets and liabilities

	December 31, 2015						December 31, 2014
	Fair Value of Assets			Fair Value of Liabilities			Fair Value of Assets			Fair Value of Liabilities
Gross derivative amounts recognized in the balance sheet	$	468		$	783		$	2,155		$	861
Gross derivative amounts not offset in the balance sheet that are eligible for offsetting	(67		)	(67		)	(26		)	(26		)
Net amount	$	401		$	716		$	2,129		$	835

Schedule of effective portion and ineffective portion of gain or loss on derivative instruments designated and qualifying as cash flow hedges

	Amount of Gain or (Loss) Recognized
	in OCI on Derivatives (Effective Portion)
	December 31
	2015			2014			2013
Foreign exchange contracts	$	647		$	2,095		$	1,326
Natural gas contracts	(984		)	(782		)	135
Total	$	(337	)	$	1,313		$	1,461

	Amount of Gain or (Loss) Reclassified from
	Accumulated OCI into Earnings (Effective Portion) (1)
	December 31
	2015			2014		2013
Foreign exchange contracts	$	2,077		$	484	$	1,018
Natural gas contracts	(941		)	221		(555		)
Total	$	1,136		$	705	$	463

(1) Assuming market rates remain constant with the rates as of December 31, 2015, a loss of $0.2 million is expected to be recognized in earnings over the next 12 months.

	Amount of Gain or (Loss) Recognized
	in Earnings on Derivatives (Ineffective Portion
	and Amount Excluded from Effectiveness Testing)
	December 31
	2015		2014		2013
Foreign exchange contracts	$	—	$	—	$	198
Total	$	—	$	—	$	198

Schedule of fair value gains and losses on derivative contracts not qualified for hedge accounting treatment

	Amount of Gain or (Loss) Recognized in Earnings on Derivatives
	December 31
	2015			2014			2013
Foreign exchange contracts	$	(1,042	)	$	(511	)	$	1,256
Total	$	(1,042	)	$	(511	)	$	1,256