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Derivative Instruments and Hedging Activities (Details Textual)	3 Months Ended		6 Months Ended
	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 Designated as Hedging Instrument [Member] USD ($)	Jun. 30, 2013 Designated as Hedging Instrument [Member] CAD	Dec. 31, 2012 Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2012 Designated as Hedging Instrument [Member] CAD	Jun. 30, 2013 Not Designated as Hedging Instrument [Member] USD ($)	Jun. 30, 2013 Not Designated as Hedging Instrument [Member] CAD	Dec. 31, 2012 Not Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2012 Not Designated as Hedging Instrument [Member] CAD
Derivatives, Fair Value [Line Items]
Notional amount of Canadian forward contracts					$ 7,100,000	7,500,000	$ 12,400,000	12,300,000	$ 900,000	900,000	$ 2,700,000	2,600,000
Derivative Instruments and Hedging Activities (Textual) [Abstract]
Unrealized pretax gain on outstanding derivatives accumulated in other comprehensive loss expected to be reclassified within 12 months	100,000		100,000
Gains and Losses from derivative contracts not designated as hedging instruments recognized in net sales	$ 100,000	$ 47,000	$ (12,000)	$ (100,000)

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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- Definition

The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994

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