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Short-Term Borrowings and Credit Lines (Details)
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12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
USD ($)
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Dec. 31, 2011
USD ($)
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Dec. 31, 2012
Domestic [Member]
Unsecured And Uncommitted Line Of Credit [Member]
USD ($)
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Dec. 31, 2011
Domestic [Member]
Unsecured And Uncommitted Line Of Credit [Member]
USD ($)
|
Dec. 31, 2012
Canadian Subsidiary [Member]
Unsecured And Uncommitted Line Of Credit [Member]
USD ($)
|
Dec. 31, 2012
Canadian Subsidiary [Member]
Unsecured And Uncommitted Line Of Credit [Member]
CAD
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Dec. 31, 2011
Canadian Subsidiary [Member]
Unsecured And Uncommitted Line Of Credit [Member]
USD ($)
|
Dec. 31, 2012
European Subsidiary [Member]
USD ($)
|
Dec. 31, 2011
European Subsidiary [Member]
USD ($)
|
Dec. 31, 2012
European Subsidiary [Member]
Unsecured And Uncommitted Line Of Credit [Member]
USD ($)
|
Dec. 31, 2012
European Subsidiary [Member]
European Customs Guaranteed Line Of Credit [Member]
USD ($)
|
Dec. 31, 2012
European Subsidiary [Member]
Unsecured And Uncommitted Credit Line1 [Member]
EUR (€)
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Dec. 31, 2012
European Subsidiary [Member]
Unsecured And Uncommitted Credit Line2 [Member]
EUR (€)
|
Dec. 31, 2012
Japanese Subsidiary [Member]
Unsecured And Uncommitted Line Of Credit [Member]
USD ($)
|
Dec. 31, 2012
Japanese Subsidiary [Member]
Revolving Line Of Credit [Member]
USD ($)
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Dec. 31, 2011
Japanese Subsidiary [Member]
Revolving Line Of Credit [Member]
USD ($)
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Dec. 31, 2012
Korean Subsidiary [Member]
USD ($)
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Dec. 31, 2011
Korean Subsidiary [Member]
USD ($)
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Dec. 31, 2012
Korean Subsidiary [Member]
Unsecured And Uncommitted Line Of Credit [Member]
USD ($)
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Dec. 31, 2012
Committed Portion Of Credit Facility [Member]
Domestic [Member]
|
Dec. 31, 2012
Committed Portion Of Credit Facility [Member]
Domestic [Member]
Revolving Line Of Credit [Member]
USD ($)
|
Dec. 31, 2012
Minimum [Member]
Domestic [Member]
Committed Line Of Credit [Member]
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Dec. 31, 2012
Maximum [Member]
Domestic [Member]
Committed Line Of Credit [Member]
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| Line of Credit Facility [Line Items] | |||||||||||||||||||||||
| Interest rate description | Canadian prime rate | Canadian prime rate | European Central Bank ("ECB") refinancing rate plus 50 basis points | Euro Overnight Index Average ("EONIA") plus 75 basis points | LIBOR plus 110 basis points | CD rate plus 220 basis points | LIBOR plus 100 basis points | LIBOR plus 175 basis points | |||||||||||||||
| Line of credit facility amount outstanding | $ 156,000 | $ 0 | $ 0 | $ 0 | $ 156,000 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | |||||||||||
| Available credit amount | 125,000,000 | 5,000,000 | |||||||||||||||||||||
| Maturity date of agreement | Jul. 01, 2016 | ||||||||||||||||||||||
| Maximum borrowing capacity | 30,239,000 | 30,000,000 | 40,633,000 | 3,694,000 | 25,800,000 | 5,000,000 | 5,000,000 | 30,000,000 | |||||||||||||||
| Letters of credit, outstanding amount | $ 0 | ||||||||||||||||||||||