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Long-Term Debt (Narrative) (Details) | Dec. 31, 2012 USD ($) | Dec. 31, 2012 Bank revolving credit facility France EUR (€) | Dec. 31, 2012 Bank revolving credit facility Canada CAD | Dec. 31, 2012 Bank revolving credit facility Australia AUD | Dec. 31, 2012 Bank revolving credit facility Amended and Restated Revolving Credit Agreement USD ($) | Dec. 31, 2012 Bank revolving credit facility Amended and Restated Revolving Credit Agreement Standby Letters of Credit USD ($) | Dec. 31, 2012 Bank revolving credit facility Lloyd's TSB Bank PLC Annual Overdraft Facility
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Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate commitments |  |  |  |  | $ 100,000,000 |  |
Maximum amount of aggregate commitements (up to $50,000,000) |  |  |  |  | 50,000,000 |  |
Amount of capacity |  |  |  |  |  | 1,335,000 |
Available borrowings |  |  |  |  | 98,665,000 |  |
Interest rate percentage |  |  |  |  |  |  | 2.00%
Amount of available borrowings |  | 6,200,000 | 3,500,000 | 400,000 |  |  |
Bank revolving credit facility |  | 238,000 |  |  |  |  |
2013 | 588,000 |  |  |  |  |  |
2014 | 109,000 |  |  |  |  |  |
2015 | 9,000 |  |  |  |  |  |
Thereafter | $ 0 |  |  |  |  |  |

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