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Income Taxes (Details) - Multiple tax jurisdictions, both within and outside of the United States (Parentheticals)
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12 Months Ended |
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Dec. 31, 2013
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United States – Federal [Member] | Minimum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2010 |
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United States – Federal [Member] | Maximum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2013 |
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United States – State [Member] | Minimum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2009 |
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United States – State [Member] | Maximum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2013 |
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Canada [Member] | Minimum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2008 |
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Canada [Member] | Maximum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2013 |
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Sweden [Member] | Minimum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2011 |
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Sweden [Member] | Maximum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2013 |
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United Kingdom [Member] | Minimum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2009 |
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United Kingdom [Member] | Maximum [Member]
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| Income Tax Examination [Line Items] | |
| Open Tax Year | 2013 |