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Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Consolidated Statements Of Comprehensive Income [Abstract] |  |  |
Net income | $ 18,133 | $ 10,806 | $ 11,862
Other comprehensive income (loss) - Currency translation adjustment | (2,120) | (3,747) | 559
Comprehensive income | $ 16,013 | $ 7,059 | $ 12,421

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