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Description Of Business And Basis Of Presentation (Average Exchange Rates) (Details) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Canadian Dollar [Member] |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |
Average exchange rate | 1.0104 | 0.9678 | 1.0060 | 0.9769
Change in average foreign currency rate | (4.4) |  | (3.0) |
Euros [Member] |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |
Average exchange rate | 0.7796 | 0.6947 | 0.7712 | 0.7130
Change in average foreign currency rate | (12.2) |  | (8.2) |
Polish Zloty [Member] |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |
Average exchange rate | 3.3181 | 2.7495 | 3.2724 | 2.8180
Change in average foreign currency rate | (20.7) |  | (16.1) |

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