Derivatives Gain (Loss) in Statement of Finacial Position (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivatives (Effective Portion)	$ (39,000)	$ (5,440,000)
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	112,000	3,763,000
Amount of Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	(76,000)	4,000
Amount of Gain (Loss) Recognized in Income on Derivatives	(271,000)	3,763,000	(250,000)
Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain Recognized in Income	432,000	155,000
Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain Recognized in Income		3,608,000
Derivative Instruments, Loss Recognized in Income	703,000
Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	72,000	1,159,000
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivatives (Effective Portion)	(482,000)	(5,494,000)
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	251,000	3,763,000
Amount of Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	(76,000)	4,000
Foreign Exchange Forward [Member] | Selling General and Administrative Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain Recognized in Income	72,000	1,159,000
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivatives (Effective Portion)	443,000	54,000
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(139,000)	0
Amount of Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0
Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Loss Recognized in Income	(337,000)	(600,000)
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss)	(781,000)	(540,000)
Designated as Hedging Instrument [Member] | EUR / SEK [Member] | Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss)	$ 75,000	$ 0