Basis of Presentation, Description of Business, Significant Accounting Policies and Critical Accounting Estimates - Additional Information (Detail)
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12 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||||
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Dec. 31, 2012
USD ($)
State
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Dec. 31, 2011
USD ($)
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Dec. 31, 2010
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Dec. 31, 2012
CAD
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Dec. 31, 2012
Indemnification Agreement [Member]
CAD
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Dec. 31, 2012
Contractual obligations [Member]
USD ($)
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Dec. 31, 2011
Contractual obligations [Member]
USD ($)
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Dec. 31, 2012
Reinsured claims losses [Member]
USD ($)
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Dec. 31, 2011
Reinsured claims losses [Member]
USD ($)
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Dec. 31, 2012
Senior Credit Facility [Member]
USD ($)
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Dec. 31, 2012
Old Credit Facility
USD ($)
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Dec. 31, 2012
Senior subordinated notes [Member]
USD ($)
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Dec. 31, 2012
Social Services Providers Captive Insurance Company [Member]
USD ($)
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Dec. 31, 2011
Social Services Providers Captive Insurance Company [Member]
USD ($)
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Dec. 31, 2012
Provado Insurance Services [Member]
USD ($)
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Dec. 31, 2011
Provado Insurance Services [Member]
USD ($)
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Dec. 31, 2012
General and professional liability reinsurance program [Member]
Reinsured claims losses [Member]
USD ($)
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Dec. 31, 2011
General and professional liability reinsurance program [Member]
Reinsured claims losses [Member]
USD ($)
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Dec. 31, 2012
General and professional liability reinsurance program [Member]
Social Services Providers Captive Insurance Company [Member]
USD ($)
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Dec. 31, 2011
Workers' compensation [Member]
Reinsured claims losses [Member]
USD ($)
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Dec. 31, 2012
Workers' compensation [Member]
Social Services Providers Captive Insurance Company [Member]
USD ($)
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Dec. 31, 2012
Collateral for letters of credit [Member]
Contractual obligations [Member]
USD ($)
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Dec. 31, 2011
Collateral for letters of credit [Member]
Contractual obligations [Member]
USD ($)
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Dec. 31, 2012
Collateral for letters of credit [Member]
Reinsured claims losses [Member]
USD ($)
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Dec. 31, 2011
Collateral for letters of credit [Member]
Reinsured claims losses [Member]
USD ($)
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Dec. 31, 2012
Contractual obligations [Member]
USD ($)
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Dec. 31, 2011
Contractual obligations [Member]
USD ($)
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Dec. 31, 2012
Auto liability program [Member]
Reinsured claims losses [Member]
USD ($)
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Dec. 31, 2011
Auto liability program [Member]
Reinsured claims losses [Member]
USD ($)
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Dec. 31, 2012
Bank Of Tucson [Member]
USD ($)
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Dec. 31, 2012
Wells Fargo Bank [Member]
USD ($)
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Dec. 31, 2012
Fifth Third Bank [Member]
USD ($)
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Dec. 31, 2012
Bank Of America [Member]
USD ($)
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Dec. 31, 2012
Non-Interest Bearing Bank [Member]
USD ($)
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Basis Of Presentation And Significant Accounting Policies [Line Items] | ||||||||||||||||||||||||||||||||||
No of segments of business operations | 42 | |||||||||||||||||||||||||||||||||
Cash in hand | $ 4,100,000 | $ 3,700,000 | ||||||||||||||||||||||||||||||||
Restricted cash amount | 12,740,093 | 15,536,495 | 941,184 | 1,104,334 | 11,798,909 | 14,432,161 | 5,100,000 | 5,100,000 | 755,000 | 243,000 | 243,000 | 5,633,921 | 4,808,921 | 698,184 | 861,334 | 1,100,000 | 3,800,000 | 5,900,000 | 5,100,000 | 846,000 | 250,000 | 698,000 | ||||||||||||
Number of uncollectible days which deemed and written off | 365 | |||||||||||||||||||||||||||||||||
Maximum percentage on revenues written off | 1.00% | 1.00% | 1.00% | |||||||||||||||||||||||||||||||
Accrued transportation costs | 61,300,000 | 47,700,000 | ||||||||||||||||||||||||||||||||
Deferred financing costs | 2,200,000 | 3,200,000 | 2,200,000 | 1,100,000 | 2,300,000 | |||||||||||||||||||||||||||||
Percentage of non-emergency transportation services revenue | 83.00% | |||||||||||||||||||||||||||||||||
Exchangeable shares issued | 287,576 | |||||||||||||||||||||||||||||||||
Exchangeable shares issued, value | 7,800,000 | |||||||||||||||||||||||||||||||||
Exchangeable stock value for accounting purposes | 7,600,000 | |||||||||||||||||||||||||||||||||
Number of exchangeable shares per common stock | 1 | |||||||||||||||||||||||||||||||||
Number of exchangeable shares exchanged | 25,882 | |||||||||||||||||||||||||||||||||
Non-controlling interest | 6,960,537 | 6,960,537 | ||||||||||||||||||||||||||||||||
Dispute claims | 300,000 | 13,000 | ||||||||||||||||||||||||||||||||
Cash and other long-term liabilities | 3,400,000 | |||||||||||||||||||||||||||||||||
Maximum reinsurance coverage per loss/occurrence | 250,000 | 100,000 | ||||||||||||||||||||||||||||||||
Reinsurance coverage, aggregate amount | 1,100,000 | 5,000,000 | 8,000,000 | |||||||||||||||||||||||||||||||
Maximum reinsurance coverage per loss/occurrence | 350,000 | |||||||||||||||||||||||||||||||||
Reinsurance reserves | 8,800,000 | 7,400,000 | 4,400,000 | 4,700,000 | ||||||||||||||||||||||||||||||
Percentage of gross written premium | 107.70% | |||||||||||||||||||||||||||||||||
Maximum potential liability for individual claims | 250,000 | |||||||||||||||||||||||||||||||||
Self-funded insurance reserve | $ 2,100,000 | $ 1,600,000 |