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Investments (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Purchase of Keymark software assets |  |  |
Loan repayment received from Keymark | $ 1,698,000 | $ 552,000 | $ 50,000
Keymark Enterprises, LLC |  |  |
Purchase of Keymark software assets |  |  |
Gain on disposal of investment in Keymark |  | 4,300,000 |
Investment in Keymark, carrying value |  | 1,000,000 |
Loan repayment received from Keymark |  | 500,000 |
Software assets acquired |  | 11,500,000 |
Software assets acquired, net cash payments |  | $ 6,200,000 |
Ownership interest given up in exchange for software assets acquired (as a percent) |  | 46.10% |

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- Definition This item represents the carrying amount of the entity's equity method investment which has been sold. This item is used only for purposes of disclosing the calculated gain (loss) on disposal of the subject equity method investment and not for reporting the carrying value of equity method investments as presented on the entity's balance sheet. For reporting the carrying value of equity method investments presented on the entity's balance sheet, the EquityMethodInvestments (Equity Method Investments) element would be used. + References No definition available. + Details
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- Definition The cash outflow associated with the acquisition from vendors of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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