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Commitments and Contingencies (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2012 Apex Systems property
Long-term Debt |  |  |  |
2013 | $ 10,000,000 |  |  |
2014 | 10,000,000 |  |  |
2015 | 10,000,000 |  |  |
2016 | 10,000,000 |  |  |
2017 | 52,500,000 |  |  |
Thereafter | 334,088,000 |  |  |
Total | 426,588,000 |  |  |
Operating Leases |  |  |  |
2013 | 13,545,000 |  |  |
2014 | 11,117,000 |  |  |
2015 | 9,210,000 |  |  |
2016 | 6,386,000 |  |  |
2017 | 3,588,000 |  |  |
Thereafter | 6,764,000 |  |  |
Total | 50,610,000 |  |  |
Related Party |  |  |  |
2013 | 1,266,000 |  |  |
2014 | 1,299,000 |  |  |
2015 | 1,168,000 |  |  |
2016 | 694,000 |  |  |
2017 | 175,000 |  |  |
Thereafter | 0 |  |  |
Total | 4,602,000 |  |  |
Total |  |  |  |
2013 | 24,811,000 |  |  |
2014 | 22,416,000 |  |  |
2015 | 20,378,000 |  |  |
2016 | 17,080,000 |  |  |
2017 | 56,263,000 |  |  |
Thereafter | 340,852,000 |  |  |
Total | 481,800,000 |  |  |
Deferred rent liability, current | 300,000 |  |  |
Deferred rent liability, noncurrent | 3,800,000 | 2,100,000 |  |
Rent expense | 14,100,000 | 8,600,000 | 8,400,000 |
Self insurance claim liability | 10,300,000 | 10,400,000 |  |
Letters of credit outstanding | 2,800,000 | 2,400,000 |  |
Approximate potential future earn-out obligations | 9,100,000 |  |  |
Number of leased properties owned by related parties (in number of properties) |  |  |  | 2
Income tax reserve in other long-term liabilities | $ 400,000 | $ 300,000 |  |

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- Definition Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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