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Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Income Tax Disclosure [Abstract] |  |  |  |
Undistributed earnings of foreign subsidiaries | $ 47,385 |  |  |
Unrecognized tax benefit, excluding interest and penalties | 11,553 | 9,410 | 5,723 | 4,989
Unrecognized tax benefits that would affect effective tax rate | 9,965 |  |  |
Amount included in Current liabilities | 5,291 |  |  |
Amount included in Other long-term liabilities | 7,032 | 8,276 |  |
Amount of previously unrecognized tax benefits recognized | 1,944 |  |  |
Tax related interest and penalties | 770 | 634 | 690 |
Unrecognized tax benefits within the next 12 months | $ 5,291 |  |  |

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