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Statement of Income of CONTADO (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Statement of Income |  |
Total revenues | $ 40,567 | $ 36,556
Income from operations | 9,515 | 7,210
Net income | $ 4,637 | $ 8,261

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