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Commitments and Contingencies (Details) (USD $) | Sep. 30, 2012 | Dec. 31, 2011
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Commitments and Contingencies Disclosure [Abstract] |  |
Deferred rent liability, current | $ 300,000 | $ 300,000
Deferred rent liability, noncurrent | 3,900,000 | 2,100,000
Long-term Debt |  |
2012 | 2,500,000 |
2013 | 10,000,000 |
2014 | 10,000,000 |
2015 | 10,000,000 |
2016 | 10,000,000 |
Thereafter | 396,588,000 |
Total | 439,088,000 |
Operating Leases |  |
2012 | 3,489,000 |
2013 | 12,024,000 |
2014 | 9,790,000 |
2015 | 8,010,000 |
2016 | 5,216,000 |
Thereafter | 9,338,000 |
Total | 47,867,000 |
Related Party |  |
2012 | 309,000 |
2013 | 1,266,000 |
2014 | 1,299,000 |
2015 | 1,168,000 |
2016 | 694,000 |
Thereafter | 175,000 |
Total | 4,911,000 |
Total |  |
2012 | 6,298,000 |
2013 | 23,290,000 |
2014 | 21,089,000 |
2015 | 19,178,000 |
2016 | 15,910,000 |
Thereafter | 406,101,000 |
Total | 491,866,000 |
Self insurance claim liability | 10,600,000 | 10,400,000
Letters of credit outstanding, amount | 2,600,000 | 2,400,000
Approximate potential future earn-out obligations | $ 10,100,000 |
Apex Systems |  |
Business Acquisition [Line Items] |  |
Number of leased properties owned by related parties (in number of properties) | 2 |

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- Definition Minimum amount of other commitment maturing in the second fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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- Definition Minimum amount of other commitment maturing in the third fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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