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Summary Of Significant 会计政策 (Cumulative Translation Adjustments Included In Accumulated Other Comprehensive Income) (Details) (USD $)
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12个月结束 | |||
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12月. 31, 2011
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12月. 31, 2010
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12月. 31, 2009
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12月. 31, 2008
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| Summary Of Significant 会计政策 [Abstract] | ||||
| Cumulative translation adjustments included in accumulated other comprehensive income | $ 1,087,000 | $ 2,952,000 | $ 696,000 | $ (4,803,000) |