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Accounting Policies (Narrative) (Details) (USD $) | 12 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Mar. 31, 2011 Accounting Standards Update 2009-13 [Member] | Dec. 31, 2011 Russia Entity [Member]
Adoption of new accounting pronouncement, increase in revenue |  |  |  | $ 2,400,000 |
Adoption of new accounting pronouncement, increase in operating income |  |  |  | 900,000 |
Interest in foreign subsidiaries |  |  |  |  | 50.00%
Capitalized salaries, travel, and consulting costs related to software development | 2,300,000 | 4,200,000 |  |  |
Rate of return on life insurance policies |  |  | 5.20% |  |
Cash received from life insurance policy terminations |  | $ 49,302,000 | $ 2,272,000 |  |

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