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Basis of Presentation (Details 5) (USD $) | 3 Months Ended | 9 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 Out-of-period adjustments Adjustments related to the Keymark acquisition and capitalization of software development costs | Jun. 30, 2013 Out-of-period adjustments Adjustments related to the Keymark acquisition and capitalization of software development costs | Mar. 31, 2013 Out-of-period adjustments Adjustments related to the Keymark acquisition and capitalization of software development costs | Jun. 30, 2013 Out-of-period adjustments Adjustments related to the Keymark acquisition and capitalization of software development costs
Out-of-period adjustments, net of tax |  |  |  |  |  | $ 700,000 |  |  |
Increase in net income | 20,006,000 | 5,882,000 | 12,976,000 | 43,303,000 | 36,036,000 | 700,000 |  |  |
Understated net income |  |  |  |  |  |  | $ 300,000 | $ 400,000 | $ 700,000

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