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Discontinued Operations (Details Textual) (USD $) | 12 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  | 12 Months Ended | 3 Months Ended | 12 Months Ended
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Dec. 31, 2012 | Jan. 01, 2012 | Jan. 02, 2011 | Dec. 31, 2012 Residential Treatment Services [Member] | Dec. 31, 2012 Residential Treatment Services [Member] | Jan. 01, 2012 Residential Treatment Services [Member] | Jan. 02, 2011 Residential Treatment Services [Member] | Apr. 19, 2012 East Mississippi Correctional Facility [Member] bed | Aug. 13, 2012 Marshall County Correctional Facility [Member] bed | Dec. 31, 2012 Walnut Grove Youth Correctional Facility [Member] bed | Dec. 31, 2012 Services Agreement [Member] | Dec. 31, 2012 License Agreement [Member] | Dec. 31, 2012 License Agreement [Member] | Dec. 31, 2012 July Two-Thousand And Eleven Stock Repurchase Program [Member] | Jan. 01, 2012 July Two-Thousand And Eleven Stock Repurchase Program [Member] | Dec. 31, 2012 July Two-Thousand And Eleven Stock Repurchase Program [Member] Residential Treatment Services [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long Lived Assets Held-for-sale, Proceeds from Sale | $ 36,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from RTS divestiture | 33,253,000 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased During Period, Shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 297,741 | 3,900,000 | 295,959
Treasury Stock, Value, Acquired, Cost Method | (8,666,000) | (74,982,000) | (80,000,000) |  | 8,600,000 |  |  |  |  |  |  |  |  | 8,700,000 | 75,000,000 |
Long-Term Purchase Commitment, Earn-Out | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase Price Adjustment, Measurement Term, Events | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase Price Adjustment, Measurement Term, Contracts | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Services Agreement Contract Term |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |
Sales Revenue, Services, Other |  |  |  |  |  |  |  |  |  |  | 1,800,000 |  |  |  |  |
Fair Value Inputs, Discount Rate |  |  |  |  |  |  |  |  |  |  | 10.00% | 10.00% |  |  |  |
Licensing Agreement Contract Term |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |
Licenses Revenue |  |  |  |  |  |  |  |  |  |  |  |  | 400,000 |  |  |
Number of beds discontinued |  |  |  |  |  |  |  | 1,500 | 1,000 | 1,450 |  |  |  |  |  |
Loss on sale of discontinued operation, net of tax |  |  |  | 14,600,000 |  |  |  |  |  |  |  |  |  |  |  |
Business Exit Costs | 2,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue recorded as discontinued operation | $ 24,500,000 | $ 44,900,000 | $ 36,600,000 |  | $ 167,200,000 | $ 160,800,000 | $ 148,800,000 |  |  |  |  |  |  |  |  |

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