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Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land $ 136,382      
Original Buildings and Improvements 1,856,235      
Costs Capitalized Subsequent to Acquisition 650,448      
Land and Improvements 125,104      
Building and Improvements 2,423,197      
Land Held for Development 31,442      
Development and Construction in Progress 63,322      
Total 2,643,065 $ 2,501,844 $ 2,255,260 $ 2,214,057
Accumulated Depreciation 558,657 $ 492,582 $ 429,814 $ 371,563
Book Value of Mortgaged Properties 1,073,506      
Broward Transition Center | Deerfield Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 4,085      
Original Buildings and Improvements 15,441      
Costs Capitalized Subsequent to Acquisition 18,696      
Land and Improvements 4,096      
Building and Improvements 34,053      
Land Held for Development 0      
Development and Construction in Progress 73      
Total 38,222      
Accumulated Depreciation 8,864      
Book Value of Mortgaged Properties 29,358      
D. Ray James Correctional Facility | Folkston, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,229      
Original Buildings and Improvements 55,961      
Costs Capitalized Subsequent to Acquisition 13,648      
Land and Improvements 1,720      
Building and Improvements 68,875      
Land Held for Development 243      
Development and Construction in Progress 0      
Total 70,838      
Accumulated Depreciation 13,828      
Book Value of Mortgaged Properties 57,010      
Folkston ICE Processing Center | Folkston, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 291      
Original Buildings and Improvements 30,399      
Costs Capitalized Subsequent to Acquisition 7,541      
Land and Improvements 291      
Building and Improvements 37,865      
Land Held for Development 0      
Development and Construction in Progress 75      
Total 38,231      
Accumulated Depreciation 6,235      
Book Value of Mortgaged Properties 31,996      
LaSalle Detention Facility | Jena, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 856      
Original Buildings and Improvements 51,623      
Costs Capitalized Subsequent to Acquisition 6,394      
Land and Improvements 1,127      
Building and Improvements 57,232      
Land Held for Development 514      
Development and Construction in Progress 0      
Total 58,873      
Accumulated Depreciation 15,204      
Book Value of Mortgaged Properties 43,669      
Alexandria Transfer Center | Alexandria, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 17,283      
Costs Capitalized Subsequent to Acquisition 45      
Land and Improvements 0      
Building and Improvements 17,328      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 17,328      
Accumulated Depreciation 1,537      
Book Value of Mortgaged Properties 0      
Moshannon Valley Correctional Center | Philipsburg, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,107      
Original Buildings and Improvements 65,160      
Costs Capitalized Subsequent to Acquisition 8,733      
Land and Improvements 1,713      
Building and Improvements 73,200      
Land Held for Development 87      
Development and Construction in Progress 0      
Total 75,000      
Accumulated Depreciation 14,530      
Book Value of Mortgaged Properties 60,470      
North Lake Correctional Facility | Baldwin, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 66      
Original Buildings and Improvements 36,727      
Costs Capitalized Subsequent to Acquisition 57,667      
Land and Improvements 66      
Building and Improvements 88,132      
Land Held for Development 0      
Development and Construction in Progress 6,262      
Total 94,460      
Accumulated Depreciation 13,668      
Book Value of Mortgaged Properties 80,792      
Queens Detention Facility | Jamaica, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 2,237      
Original Buildings and Improvements 19,847      
Costs Capitalized Subsequent to Acquisition 1,953      
Land and Improvements 2,237      
Building and Improvements 21,800      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 24,037      
Accumulated Depreciation 9,700      
Book Value of Mortgaged Properties 0      
Riverbend Correctional Facility | Milledgeville, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 72,932      
Costs Capitalized Subsequent to Acquisition 414      
Land and Improvements 25      
Building and Improvements 73,321      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 73,346      
Accumulated Depreciation 13,941      
Book Value of Mortgaged Properties 59,405      
Rivers Correctional Institution | Winton, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 875      
Original Buildings and Improvements 60,328      
Costs Capitalized Subsequent to Acquisition 5,505      
Land and Improvements 1,235      
Building and Improvements 65,324      
Land Held for Development 149      
Development and Construction in Progress 0      
Total 66,708      
Accumulated Depreciation 23,242      
Book Value of Mortgaged Properties 43,466      
Robert A. Deyton Detention Facility | Lovejoy, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 8,163      
Costs Capitalized Subsequent to Acquisition 10,376      
Land and Improvements 15      
Building and Improvements 18,524      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 18,539      
Accumulated Depreciation 9,879      
Book Value of Mortgaged Properties 0      
Big Spring Correctional Center | Big Spring, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 480      
Original Buildings and Improvements 82,180      
Costs Capitalized Subsequent to Acquisition 31,589      
Land and Improvements 2,235      
Building and Improvements 111,969      
Land Held for Development 0      
Development and Construction in Progress 45      
Total 114,249      
Accumulated Depreciation 28,573      
Book Value of Mortgaged Properties 0      
Great Plains Correctional Facility | Hinton, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 463      
Original Buildings and Improvements 76,580      
Costs Capitalized Subsequent to Acquisition 15,232      
Land and Improvements 2,220      
Building and Improvements 89,921      
Land Held for Development 0      
Development and Construction in Progress 134      
Total 92,275      
Accumulated Depreciation 17,132      
Book Value of Mortgaged Properties 75,143      
Joe Corley Detention Facility | Conroe, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 470      
Original Buildings and Improvements 64,813      
Costs Capitalized Subsequent to Acquisition 7,391      
Land and Improvements 598      
Building and Improvements 72,052      
Land Held for Development 0      
Development and Construction in Progress 24      
Total 72,674      
Accumulated Depreciation 9,385      
Book Value of Mortgaged Properties 63,289      
Karnes Correctional Center | Karnes City, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 937      
Original Buildings and Improvements 24,825      
Costs Capitalized Subsequent to Acquisition 2,148      
Land and Improvements 912      
Building and Improvements 26,822      
Land Held for Development 176      
Development and Construction in Progress 0      
Total 27,910      
Accumulated Depreciation 7,813      
Book Value of Mortgaged Properties 20,097      
Karnes County Residential Center | Karnes City, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 29,052      
Costs Capitalized Subsequent to Acquisition 30,122      
Land and Improvements 47      
Building and Improvements 59,127      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 59,174      
Accumulated Depreciation 6,782      
Book Value of Mortgaged Properties 0      
Lawton Correctional Facility | Lawton, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,012      
Original Buildings and Improvements 96,637      
Costs Capitalized Subsequent to Acquisition 13,078      
Land and Improvements 1,073      
Building and Improvements 107,084      
Land Held for Development 0      
Development and Construction in Progress 2,570      
Total 110,727      
Accumulated Depreciation 25,974      
Book Value of Mortgaged Properties 84,753      
Rio Grande Detention Center | Laredo, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 8,365      
Original Buildings and Improvements 81,178      
Costs Capitalized Subsequent to Acquisition 1,410      
Land and Improvements 6,266      
Building and Improvements 82,536      
Land Held for Development 2,099      
Development and Construction in Progress 52      
Total 90,953      
Accumulated Depreciation 17,434      
Book Value of Mortgaged Properties 73,519      
South Texas Detention Complex | Pearsall, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 437      
Original Buildings and Improvements 31,405      
Costs Capitalized Subsequent to Acquisition 6,088      
Land and Improvements 437      
Building and Improvements 37,493      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 37,930      
Accumulated Depreciation 10,537      
Book Value of Mortgaged Properties 0      
Val Verde Correctional Facility | Del Rio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 21      
Original Buildings and Improvements 56,009      
Costs Capitalized Subsequent to Acquisition 1,396      
Land and Improvements 16      
Building and Improvements 57,405      
Land Held for Development 5      
Development and Construction in Progress 0      
Total 57,426      
Accumulated Depreciation 16,575      
Book Value of Mortgaged Properties 40,851      
Adelanto Detention Facility | Adelanto, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 8,005      
Original Buildings and Improvements 113,255      
Costs Capitalized Subsequent to Acquisition 43,057      
Land and Improvements 10,278      
Building and Improvements 153,989      
Land Held for Development 0      
Development and Construction in Progress 50      
Total 164,317      
Accumulated Depreciation 19,985      
Book Value of Mortgaged Properties 144,332      
Aurora/ICE Processing Center | Aurora, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 4,590      
Original Buildings and Improvements 15,200      
Costs Capitalized Subsequent to Acquisition 75,170      
Land and Improvements 4,278      
Building and Improvements 89,372      
Land Held for Development 1,310      
Development and Construction in Progress 0      
Total 94,960      
Accumulated Depreciation 17,708      
Book Value of Mortgaged Properties 77,252      
Central Valley MCCF | Mc Farland, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,055      
Original Buildings and Improvements 28,133      
Costs Capitalized Subsequent to Acquisition 2,879      
Land and Improvements 906      
Building and Improvements 30,950      
Land Held for Development 211      
Development and Construction in Progress 0      
Total 32,067      
Accumulated Depreciation 9,105      
Book Value of Mortgaged Properties 22,962      
Desert View MCCF | Adelanto, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,245      
Original Buildings and Improvements 27,943      
Costs Capitalized Subsequent to Acquisition 4,472      
Land and Improvements 1,245      
Building and Improvements 32,415      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 33,660      
Accumulated Depreciation 10,445      
Book Value of Mortgaged Properties 23,215      
Golden State MCCF | Mc Farland, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,264      
Original Buildings and Improvements 27,924      
Costs Capitalized Subsequent to Acquisition 2,535      
Land and Improvements 1,072      
Building and Improvements 30,398      
Land Held for Development 253      
Development and Construction in Progress 0      
Total 31,723      
Accumulated Depreciation 8,783      
Book Value of Mortgaged Properties 22,940      
Guadalupe County Correctional Facility | Santa Rosa, NM        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 181      
Original Buildings and Improvements 29,732      
Costs Capitalized Subsequent to Acquisition 1,073      
Land and Improvements 27      
Building and Improvements 30,712      
Land Held for Development 154      
Development and Construction in Progress 93      
Total 30,986      
Accumulated Depreciation 11,999      
Book Value of Mortgaged Properties 18,987      
Hudson Correctional Facility | Hudson, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 11,140      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 4,599      
Land and Improvements 7,372      
Building and Improvements 4,447      
Land Held for Development 3,920      
Development and Construction in Progress 0      
Total 15,739      
Accumulated Depreciation 5,343      
Book Value of Mortgaged Properties 0      
Lea County Correctional Facility | Hobbs, NM        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 347      
Original Buildings and Improvements 67,933      
Costs Capitalized Subsequent to Acquisition 2,514      
Land and Improvements 0      
Building and Improvements 70,401      
Land Held for Development 347      
Development and Construction in Progress 46      
Total 70,794      
Accumulated Depreciation 18,798      
Book Value of Mortgaged Properties 0      
McFarland CCF | Mc Farland, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 914      
Original Buildings and Improvements 9,019      
Costs Capitalized Subsequent to Acquisition 8,996      
Land and Improvements 2,036      
Building and Improvements 16,710      
Land Held for Development 183      
Development and Construction in Progress 0      
Total 18,929      
Accumulated Depreciation 5,411      
Book Value of Mortgaged Properties 0      
Mesa Verde CCF | Bakersfield, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 2,237      
Original Buildings and Improvements 13,714      
Costs Capitalized Subsequent to Acquisition 15,277      
Land and Improvements 2,237      
Building and Improvements 25,813      
Land Held for Development 2,881      
Development and Construction in Progress 297      
Total 31,228      
Accumulated Depreciation 4,699      
Book Value of Mortgaged Properties 0      
Northwest Detention Center | Tacoma, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 3,916      
Original Buildings and Improvements 39,000      
Costs Capitalized Subsequent to Acquisition 50,599      
Land and Improvements 6,546      
Building and Improvements 86,969      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 93,515      
Accumulated Depreciation 21,287      
Book Value of Mortgaged Properties 0      
Western Region Detention Facility | San Diego, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 28,071      
Costs Capitalized Subsequent to Acquisition 1,324      
Land and Improvements 0      
Building and Improvements 29,395      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 29,395      
Accumulated Depreciation 29,353      
Book Value of Mortgaged Properties 0      
Delaney Hall | Newark, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 3,759      
Original Buildings and Improvements 22,502      
Costs Capitalized Subsequent to Acquisition 13,362      
Land and Improvements 3,779      
Building and Improvements 35,844      
Total 39,623      
Accumulated Depreciation 10,360      
Brooks County Detention Center | Falfurrias, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 410      
Original Buildings and Improvements 18,940      
Costs Capitalized Subsequent to Acquisition 670      
Land and Improvements 414      
Building and Improvements 19,517      
Land Held for Development 0      
Development and Construction in Progress 89      
Total 20,020      
Accumulated Depreciation 2,004      
Book Value of Mortgaged Properties 0      
East Hidalgo Detention Center | LaVilla, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 460      
Original Buildings and Improvements 28,010      
Costs Capitalized Subsequent to Acquisition 3,922      
Land and Improvements 523      
Building and Improvements 28,616      
Land Held for Development 0      
Development and Construction in Progress 3,253      
Total 32,392      
Accumulated Depreciation 2,599      
Book Value of Mortgaged Properties 0      
Perry County Correctional Center | Uniontown, AL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 400      
Original Buildings and Improvements 12,880      
Costs Capitalized Subsequent to Acquisition 393      
Land and Improvements 400      
Building and Improvements 13,273      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 13,673      
Accumulated Depreciation 1,362      
Book Value of Mortgaged Properties 0      
Pine Prairie Correctional Center | Pine Prairie, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 260      
Original Buildings and Improvements 11,910      
Costs Capitalized Subsequent to Acquisition 5,661      
Land and Improvements 713      
Building and Improvements 16,641      
Land Held for Development 477      
Development and Construction in Progress 0      
Total 17,831      
Accumulated Depreciation 1,809      
Book Value of Mortgaged Properties 0      
South Louisiana Correctional Center | Basile, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 290      
Original Buildings and Improvements 13,040      
Costs Capitalized Subsequent to Acquisition 15,213      
Land and Improvements 290      
Building and Improvements 28,253      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 28,543      
Accumulated Depreciation 2,077      
Book Value of Mortgaged Properties 0      
J. B. Evans Correctional Center | Newellton, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 30      
Original Buildings and Improvements 720      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 30      
Building and Improvements 720      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 750      
Accumulated Depreciation 194      
Book Value of Mortgaged Properties 0      
Coastal Bend Detention Center | Robstown, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,330      
Original Buildings and Improvements 26,820      
Costs Capitalized Subsequent to Acquisition 946      
Land and Improvements 1,349      
Building and Improvements 27,747      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 29,096      
Accumulated Depreciation 2,909      
Book Value of Mortgaged Properties 0      
Maverick County Detention Facility | Maverick County Detention Center        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 296      
Original Buildings and Improvements 15,437      
Costs Capitalized Subsequent to Acquisition 7,183      
Land and Improvements 299      
Building and Improvements 22,617      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 22,916      
Accumulated Depreciation 755      
Book Value of Mortgaged Properties 0      
Liberty Hall | Indianapolis, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 890      
Original Buildings and Improvements 2,065      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 890      
Building and Improvements 2,065      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 2,955      
Accumulated Depreciation 462      
Book Value of Mortgaged Properties 0      
Montgomery ICE Processing Center | Conroe, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 2,012      
Original Buildings and Improvements 109,650      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 2,012      
Building and Improvements 109,650      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 111,662      
Accumulated Depreciation 817      
Book Value of Mortgaged Properties 0      
Central Texas Detention Facility | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 3,999      
Land and Improvements 0      
Building and Improvements 3,999      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 3,999      
Accumulated Depreciation 3,835      
Book Value of Mortgaged Properties 0      
Lawrenceville Correctional Center | Lawrenceville, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 881      
Land and Improvements 0      
Building and Improvements 881      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 881      
Accumulated Depreciation 875      
Book Value of Mortgaged Properties 0      
Arizona State Prison- Florence West | Florence, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 320      
Original Buildings and Improvements 9,317      
Costs Capitalized Subsequent to Acquisition 1,225      
Land and Improvements 320      
Building and Improvements 10,515      
Land Held for Development 0      
Development and Construction in Progress 27      
Total 10,862      
Accumulated Depreciation 8,424      
Book Value of Mortgaged Properties 0      
Arizona State Prison- Phoenix West | Phoenix, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 7,919      
Costs Capitalized Subsequent to Acquisition 482      
Land and Improvements 0      
Building and Improvements 8,401      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 8,401      
Accumulated Depreciation 6,473      
Book Value of Mortgaged Properties 0      
Central Arizona Correctional Facility | Florence, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 396      
Costs Capitalized Subsequent to Acquisition 2,000      
Land and Improvements 0      
Building and Improvements 2,396      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 2,396      
Accumulated Depreciation 1,991      
Book Value of Mortgaged Properties 0      
Arizona State Prison Kingman | Kingman, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 411      
Land and Improvements 0      
Building and Improvements 411      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 411      
Accumulated Depreciation 121      
Book Value of Mortgaged Properties 0      
New Castle Correctional Facility | New Castle, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 23,243      
Land and Improvements 0      
Building and Improvements 23,036      
Land Held for Development 0      
Development and Construction in Progress 207      
Total 23,243      
Accumulated Depreciation 9,889      
Book Value of Mortgaged Properties 0      
Heritage Trail Correctional Facility | Plainfield, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 10      
Land and Improvements 0      
Building and Improvements 10      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 10      
Accumulated Depreciation 10      
Book Value of Mortgaged Properties 0      
South Bay Correctional Facility | Lawrenceville, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Book Value of Mortgaged Properties 0      
South Bay Correctional Facility | South Bay, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 2,464      
Land and Improvements 0      
Building and Improvements 2,464      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 2,464      
Accumulated Depreciation 2,459      
Reeves County Detention Complex R1/R2 | Pecos, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 1,203      
Land and Improvements 0      
Building and Improvements 1,203      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 1,203      
Accumulated Depreciation 1,203      
Book Value of Mortgaged Properties 0      
Reeves County Detention Complex R3 | Phoenix, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Book Value of Mortgaged Properties 0      
Reeves County Detention Complex R3 | Pecos, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 4,238      
Land and Improvements 0      
Building and Improvements 4,238      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 4,238      
Accumulated Depreciation 4,235      
Northeast New Mexico Detention Facility | Clayton, NM        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 343      
Land and Improvements 0      
Building and Improvements 343      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 343      
Accumulated Depreciation 298      
Book Value of Mortgaged Properties 0      
Blackwater River Correctional Facility | Milton, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 36      
Land and Improvements 0      
Building and Improvements 36      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 36      
Accumulated Depreciation 36      
Book Value of Mortgaged Properties 0      
Bay Correctonal Facility | Panama City, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 13      
Land and Improvements 0      
Building and Improvements 13      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 13      
Accumulated Depreciation 12      
Book Value of Mortgaged Properties 0      
Moore Haven Correctional Facility | Moore Haven, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 49      
Land and Improvements 0      
Building and Improvements 49      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 49      
Accumulated Depreciation 46      
Book Value of Mortgaged Properties 0      
Graceville Correctional Facility | Jackson, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 542      
Land and Improvements 0      
Building and Improvements 542      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 542      
Accumulated Depreciation 347      
Book Value of Mortgaged Properties 0      
Columbiana County Jail | LISBON, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 22      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 22      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 22      
Accumulated Depreciation 17      
Book Value of Mortgaged Properties 0      
George W. Hill Correctional Facility | Glen Mills, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 34      
Costs Capitalized Subsequent to Acquisition 5      
Land and Improvements 0      
Building and Improvements 39      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 39      
Accumulated Depreciation 15      
Book Value of Mortgaged Properties 0      
Kinney County Detention Center | Bracketville, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 223      
Costs Capitalized Subsequent to Acquisition 6      
Land and Improvements 0      
Building and Improvements 229      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 229      
Accumulated Depreciation 63      
Book Value of Mortgaged Properties 0      
Liberty County Jail | Liberty, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 112      
Costs Capitalized Subsequent to Acquisition 2      
Land and Improvements 0      
Building and Improvements 114      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 114      
Accumulated Depreciation 92      
Book Value of Mortgaged Properties 0      
Beaumont Transitional Treatment Center | Beaumont, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 105      
Original Buildings and Improvements 560      
Costs Capitalized Subsequent to Acquisition 563      
Land and Improvements 132      
Building and Improvements 1,096      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 1,228      
Accumulated Depreciation 487      
Book Value of Mortgaged Properties 0      
Bronx Community Re-entry Center | Bronx, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 154      
Costs Capitalized Subsequent to Acquisition 3,214      
Land and Improvements 0      
Building and Improvements 3,368      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 3,368      
Accumulated Depreciation 3,202      
Book Value of Mortgaged Properties 0      
Cordova Center | Anchorage, AK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 235      
Original Buildings and Improvements 3,225      
Costs Capitalized Subsequent to Acquisition 4,107      
Land and Improvements 235      
Building and Improvements 7,332      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 7,567      
Accumulated Depreciation 2,178      
Book Value of Mortgaged Properties 0      
El Monte Center | El Monte, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 47      
Costs Capitalized Subsequent to Acquisition 330      
Land and Improvements 0      
Building and Improvements 372      
Land Held for Development 0      
Development and Construction in Progress 5      
Total 377      
Accumulated Depreciation 369      
Book Value of Mortgaged Properties 0      
Grossman Center | Leavenworth, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 24      
Costs Capitalized Subsequent to Acquisition 41      
Land and Improvements 0      
Building and Improvements 65      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 65      
Accumulated Depreciation 56      
Book Value of Mortgaged Properties 0      
Las Vegas Community Correctional Center | Las Vegas, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 520      
Original Buildings and Improvements 1,580      
Costs Capitalized Subsequent to Acquisition 433      
Land and Improvements 520      
Building and Improvements 2,013      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 2,533      
Accumulated Depreciation 540      
Book Value of Mortgaged Properties 0      
Leidel Comprehensive Sanction Center | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 3,210      
Original Buildings and Improvements 710      
Costs Capitalized Subsequent to Acquisition 564      
Land and Improvements 3,210      
Building and Improvements 1,274      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 4,484      
Accumulated Depreciation 480      
Book Value of Mortgaged Properties 0      
Marvin Gardens Center | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 50      
Costs Capitalized Subsequent to Acquisition 2,551      
Land and Improvements 241      
Building and Improvements 2,339      
Land Held for Development 0      
Development and Construction in Progress 21      
Total 2,601      
Accumulated Depreciation 397      
Book Value of Mortgaged Properties 0      
McCabe Center | Austin, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 350      
Original Buildings and Improvements 510      
Costs Capitalized Subsequent to Acquisition 529      
Land and Improvements 350      
Building and Improvements 1,039      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 1,389      
Accumulated Depreciation 658      
Book Value of Mortgaged Properties 0      
Mid Valley House | Edinburg, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 694      
Original Buildings and Improvements 3,608      
Costs Capitalized Subsequent to Acquisition 221      
Land and Improvements 700      
Building and Improvements 3,823      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 4,523      
Accumulated Depreciation 446      
Book Value of Mortgaged Properties 0      
Midtown Center | Anchorage, AK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 130      
Original Buildings and Improvements 220      
Costs Capitalized Subsequent to Acquisition 153      
Land and Improvements 130      
Building and Improvements 373      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 503      
Accumulated Depreciation 159      
Book Value of Mortgaged Properties 0      
Northstar Center | Fairbanks, AK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 12      
Costs Capitalized Subsequent to Acquisition 257      
Land and Improvements 0      
Building and Improvements 269      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 269      
Accumulated Depreciation 266      
Book Value of Mortgaged Properties 0      
Oakland Center | Oakland, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 970      
Original Buildings and Improvements 250      
Costs Capitalized Subsequent to Acquisition 96      
Land and Improvements 970      
Building and Improvements 346      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 1,316      
Accumulated Depreciation 154      
Book Value of Mortgaged Properties 0      
Parkview Center | Anchorage, AK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 160      
Original Buildings and Improvements 1,480      
Costs Capitalized Subsequent to Acquisition 307      
Land and Improvements 160      
Building and Improvements 1,787      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 1,947      
Accumulated Depreciation 809      
Book Value of Mortgaged Properties 0      
Reality House | Brownsville, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 487      
Original Buildings and Improvements 2,771      
Costs Capitalized Subsequent to Acquisition 218      
Land and Improvements 494      
Building and Improvements 2,982      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 3,476      
Accumulated Depreciation 518      
Book Value of Mortgaged Properties 0      
Southeast Texas Transitional Center | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 910      
Original Buildings and Improvements 3,210      
Costs Capitalized Subsequent to Acquisition 3,347      
Land and Improvements 1,052      
Building and Improvements 6,383      
Land Held for Development 0      
Development and Construction in Progress 32      
Total 7,467      
Accumulated Depreciation 1,172      
Book Value of Mortgaged Properties 0      
Salt Lake City Center | Salt Lake City, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 751      
Original Buildings and Improvements 1,505      
Costs Capitalized Subsequent to Acquisition 132      
Land and Improvements 751      
Building and Improvements 1,637      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 2,388      
Accumulated Depreciation 249      
Book Value of Mortgaged Properties 0      
Seaside Center | Nome, AK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 67      
Original Buildings and Improvements 732      
Costs Capitalized Subsequent to Acquisition 3,938      
Land and Improvements 67      
Building and Improvements 4,670      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 4,737      
Accumulated Depreciation 348      
Book Value of Mortgaged Properties 0      
Taylor Street Center | San Francisco, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 3,230      
Original Buildings and Improvements 900      
Costs Capitalized Subsequent to Acquisition 3,135      
Land and Improvements 3,230      
Building and Improvements 4,035      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 7,265      
Accumulated Depreciation 1,224      
Book Value of Mortgaged Properties 0      
Tundra Center | Bethel, AK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 20      
Original Buildings and Improvements 1,190      
Costs Capitalized Subsequent to Acquisition 1,361      
Land and Improvements 79      
Building and Improvements 2,492      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 2,571      
Accumulated Depreciation 1,366      
Book Value of Mortgaged Properties 0      
Alabama Therapeutic Education | Columbiana, AL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 760      
Original Buildings and Improvements 17,118      
Costs Capitalized Subsequent to Acquisition 384      
Land and Improvements 760      
Building and Improvements 17,502      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 18,262      
Accumulated Depreciation 807      
Book Value of Mortgaged Properties 0      
Casper Reentry Center | Casper, WY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 600      
Original Buildings and Improvements 6,046      
Costs Capitalized Subsequent to Acquisition 404      
Land and Improvements 657      
Building and Improvements 6,280      
Land Held for Development 0      
Development and Construction in Progress 113      
Total 7,050      
Accumulated Depreciation 441      
Book Value of Mortgaged Properties 0      
Toler House | Newark, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 88      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 88      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 88      
Accumulated Depreciation 21      
Book Value of Mortgaged Properties 0      
Logan Hall | Newark, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 6,888      
Costs Capitalized Subsequent to Acquisition 16      
Land and Improvements 0      
Building and Improvements 6,904      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 6,904      
Accumulated Depreciation 1,618      
Book Value of Mortgaged Properties 0      
Long Beach Community Reentry Center | Long Beach, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 513      
Costs Capitalized Subsequent to Acquisition 29      
Land and Improvements 0      
Building and Improvements 542      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 542      
Accumulated Depreciation 293      
Book Value of Mortgaged Properties 0      
Arapahoe County Residential Center | Litlletown, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 2,100      
Original Buildings and Improvements 2,485      
Costs Capitalized Subsequent to Acquisition 25      
Land and Improvements 2,100      
Building and Improvements 2,510      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 4,610      
Accumulated Depreciation 227      
Book Value of Mortgaged Properties 0      
Cheyenne Mountain Reentry Center | Colorado Springs, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 270      
Original Buildings and Improvements 18,853      
Costs Capitalized Subsequent to Acquisition 458      
Land and Improvements 270      
Building and Improvements 18,941      
Land Held for Development 0      
Development and Construction in Progress 370      
Total 19,581      
Accumulated Depreciation 923      
Book Value of Mortgaged Properties 0      
Community Alternatives of El Paso County | Colorado Springs, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 560      
Original Buildings and Improvements 1,553      
Costs Capitalized Subsequent to Acquisition 68      
Land and Improvements 510      
Building and Improvements 1,621      
Land Held for Development 50      
Development and Construction in Progress 0      
Total 2,181      
Accumulated Depreciation 147      
Book Value of Mortgaged Properties 0      
Correctional Alternative Placement Services | Craig, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 126      
Original Buildings and Improvements 289      
Costs Capitalized Subsequent to Acquisition 13      
Land and Improvements 126      
Building and Improvements 294      
Land Held for Development 0      
Development and Construction in Progress 8      
Total 428      
Accumulated Depreciation 55      
Book Value of Mortgaged Properties 0      
Tooley Hall | Murray, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 315      
Original Buildings and Improvements 502      
Costs Capitalized Subsequent to Acquisition 193      
Land and Improvements 315      
Building and Improvements 695      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 1,010      
Accumulated Depreciation 182      
Book Value of Mortgaged Properties 0      
Williams Street Center | Murray, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,000      
Original Buildings and Improvements 518      
Costs Capitalized Subsequent to Acquisition 102      
Land and Improvements 1,000      
Building and Improvements 620      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 1,620      
Accumulated Depreciation 74      
Book Value of Mortgaged Properties 0      
Albert BO Robinson Assessment Treatment Center | Trenton, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 380      
Original Buildings and Improvements 16,578      
Costs Capitalized Subsequent to Acquisition 122      
Land and Improvements 380      
Building and Improvements 16,700      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 17,080      
Accumulated Depreciation 1,049      
Book Value of Mortgaged Properties 0      
Talbot Hall | Kearney, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 2,854      
Costs Capitalized Subsequent to Acquisition 174      
Land and Improvements 0      
Building and Improvements 2,958      
Land Held for Development 0      
Development and Construction in Progress 70      
Total 3,028      
Accumulated Depreciation 1,031      
Book Value of Mortgaged Properties 0      
The Harbor | Newark, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 93      
Costs Capitalized Subsequent to Acquisition 12      
Land and Improvements 0      
Building and Improvements 105      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 105      
Accumulated Depreciation 27      
Book Value of Mortgaged Properties 0      
Tully House | Newark, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,150      
Original Buildings and Improvements 5,313      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 1,150      
Building and Improvements 5,313      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 6,463      
Accumulated Depreciation 362      
Book Value of Mortgaged Properties 0      
ADAPPT | Reading, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 110      
Original Buildings and Improvements 2,460      
Costs Capitalized Subsequent to Acquisition 88      
Land and Improvements 110      
Building and Improvements 2,532      
Land Held for Development 0      
Development and Construction in Progress 16      
Total 2,658      
Accumulated Depreciation 231      
Book Value of Mortgaged Properties 0      
Alle Kiski Pavilion | Arnold, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 30      
Original Buildings and Improvements 1,345      
Costs Capitalized Subsequent to Acquisition 69      
Land and Improvements 30      
Building and Improvements 1,346      
Land Held for Development 0      
Development and Construction in Progress 68      
Total 1,444      
Accumulated Depreciation 125      
Book Value of Mortgaged Properties 0      
Broad Street | Philadelphia, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 83      
Costs Capitalized Subsequent to Acquisition 3      
Land and Improvements 0      
Building and Improvements 86      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 86      
Accumulated Depreciation 48      
Book Value of Mortgaged Properties 0      
Chester County | Chester, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 54      
Costs Capitalized Subsequent to Acquisition 30      
Land and Improvements 0      
Building and Improvements 80      
Land Held for Development 0      
Development and Construction in Progress 4      
Total 84      
Accumulated Depreciation 54      
Book Value of Mortgaged Properties 0      
Coleman Hall | Philadelphia, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 182      
Original Buildings and Improvements 8,943      
Costs Capitalized Subsequent to Acquisition 882      
Land and Improvements 182      
Building and Improvements 8,975      
Land Held for Development 0      
Development and Construction in Progress 850      
Total 10,007      
Accumulated Depreciation 609      
Book Value of Mortgaged Properties 0      
Hoffman Hall | Philadelphia, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 208      
Original Buildings and Improvements 10,103      
Costs Capitalized Subsequent to Acquisition 180      
Land and Improvements 214      
Building and Improvements 10,277      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 10,491      
Accumulated Depreciation 663      
Book Value of Mortgaged Properties 0      
Roth Hall | Philadelphia, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 44      
Costs Capitalized Subsequent to Acquisition 10      
Land and Improvements 0      
Building and Improvements 54      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 54      
Accumulated Depreciation 26      
Book Value of Mortgaged Properties 0      
Walker Hall | Philadelphia, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 55      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 55      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 55      
Accumulated Depreciation 36      
Book Value of Mortgaged Properties 0      
Community Alternatives of the Black Hills | Rapid City, SD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 7      
Original Buildings and Improvements 2,719      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 7      
Building and Improvements 2,719      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 2,726      
Accumulated Depreciation 225      
Book Value of Mortgaged Properties 0      
Abraxas Academy | Morgantown, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 4,220      
Original Buildings and Improvements 14,120      
Costs Capitalized Subsequent to Acquisition 1,541      
Land and Improvements 4,020      
Building and Improvements 15,861      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 19,881      
Accumulated Depreciation 3,324      
Book Value of Mortgaged Properties 0      
Abraxas I | Marienville, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 990      
Original Buildings and Improvements 7,600      
Costs Capitalized Subsequent to Acquisition 1,619      
Land and Improvements 1,028      
Building and Improvements 9,156      
Land Held for Development 0      
Development and Construction in Progress 25      
Total 10,209      
Accumulated Depreciation 2,650      
Book Value of Mortgaged Properties 0      
Abraxas Ohio | Shelby, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,160      
Original Buildings and Improvements 2,900      
Costs Capitalized Subsequent to Acquisition 1,105      
Land and Improvements 1,197      
Building and Improvements 3,965      
Land Held for Development 0      
Development and Construction in Progress 3      
Total 5,165      
Accumulated Depreciation 1,209      
Book Value of Mortgaged Properties 0      
Abraxas Youth Center | South Mountain, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 36      
Costs Capitalized Subsequent to Acquisition 407      
Land and Improvements 0      
Building and Improvements 443      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 443      
Accumulated Depreciation 412      
Book Value of Mortgaged Properties 0      
DuPage Interventions | Hinsdale, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 2,110      
Original Buildings and Improvements 1,190      
Costs Capitalized Subsequent to Acquisition 283      
Land and Improvements 2,110      
Building and Improvements 1,473      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 3,583      
Accumulated Depreciation 514      
Book Value of Mortgaged Properties 0      
Hector Garza Center | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 1,590      
Original Buildings and Improvements 3,540      
Costs Capitalized Subsequent to Acquisition 1,036      
Land and Improvements 1,704      
Building and Improvements 4,462      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 6,166      
Accumulated Depreciation 1,234      
Book Value of Mortgaged Properties 0      
Leadership Development Program | South Mountain, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 25      
Costs Capitalized Subsequent to Acquisition 679      
Land and Improvements 0      
Building and Improvements 704      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 704      
Accumulated Depreciation 532      
Book Value of Mortgaged Properties 0      
Southern Peaks Regional Treatment Center | Canon City, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 2,850      
Original Buildings and Improvements 11,350      
Costs Capitalized Subsequent to Acquisition 809      
Land and Improvements 3,057      
Building and Improvements 11,952      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 15,009      
Accumulated Depreciation 2,910      
Book Value of Mortgaged Properties 0      
Southwood Interventions | Chicago, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 870      
Original Buildings and Improvements 6,310      
Costs Capitalized Subsequent to Acquisition 1,245      
Land and Improvements 898      
Building and Improvements 7,527      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 8,425      
Accumulated Depreciation 2,499      
Book Value of Mortgaged Properties 0      
Woodridge Interventions | Woodridge, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 5,160      
Original Buildings and Improvements 4,330      
Costs Capitalized Subsequent to Acquisition 898      
Land and Improvements 5,304      
Building and Improvements 5,084      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 10,388      
Accumulated Depreciation 1,590      
Book Value of Mortgaged Properties 0      
Neptune CRC | Neptune City, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 11      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 11      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 11      
Accumulated Depreciation 11      
Book Value of Mortgaged Properties 0      
Perth Amboy CRC | Perth Amboy, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 19      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 19      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 19      
Accumulated Depreciation 19      
Book Value of Mortgaged Properties 0      
CDCR Contra Costa Day Reporting Center | Richmond, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 35      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 35      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 35      
Accumulated Depreciation 27      
Book Value of Mortgaged Properties 0      
Neptune CRC | Elizabeth, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 16      
Costs Capitalized Subsequent to Acquisition 30      
Land and Improvements 0      
Building and Improvements 46      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 46      
Accumulated Depreciation 33      
Book Value of Mortgaged Properties 0      
Sacramento BOP DRC | Sacramento, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 36      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 36      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 36      
Accumulated Depreciation 5      
Book Value of Mortgaged Properties 0      
Perth Amboy CRC | Perth Amboy, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 19      
Costs Capitalized Subsequent to Acquisition 44      
Land and Improvements 0      
Building and Improvements 63      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 63      
Accumulated Depreciation 55      
Book Value of Mortgaged Properties 0      
Elizabeth CRC | Elizabeth, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 26      
Costs Capitalized Subsequent to Acquisition 84      
Land and Improvements 0      
Building and Improvements 110      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 110      
Accumulated Depreciation 11      
Book Value of Mortgaged Properties 0      
Atlantic City CRC | Atlantic City, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 10      
Costs Capitalized Subsequent to Acquisition 18      
Land and Improvements 0      
Building and Improvements 28      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 28      
Accumulated Depreciation 22      
Book Value of Mortgaged Properties 0      
Orange DRC | Santa Ana, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 72      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 72      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 72      
Accumulated Depreciation 72      
Book Value of Mortgaged Properties 0      
Lancaster County PADOC DRC | Lancaster, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 73      
Costs Capitalized Subsequent to Acquisition 1      
Land and Improvements 0      
Building and Improvements 74      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 74      
Accumulated Depreciation 73      
Book Value of Mortgaged Properties 0      
Lycoming County DRC | Williamsport, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 56      
Costs Capitalized Subsequent to Acquisition 94      
Land and Improvements 0      
Building and Improvements 150      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 150      
Accumulated Depreciation 119      
Book Value of Mortgaged Properties 0      
Aurora DRC | Aurora, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 163      
Costs Capitalized Subsequent to Acquisition 1      
Land and Improvements 0      
Building and Improvements 164      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 164      
Accumulated Depreciation 128      
Book Value of Mortgaged Properties 0      
Los Angeles CDCR | Sacracmento, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 44      
Costs Capitalized Subsequent to Acquisition (20)      
Land and Improvements 0      
Building and Improvements 24      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 24      
Accumulated Depreciation 9      
Book Value of Mortgaged Properties 0      
Denver DRC | Denver, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 8      
Land and Improvements 0      
Building and Improvements 8      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 8      
Accumulated Depreciation 1      
Book Value of Mortgaged Properties 0      
Merced DRC | Merced, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 21      
Costs Capitalized Subsequent to Acquisition (18)      
Land and Improvements 0      
Building and Improvements 3      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 3      
Accumulated Depreciation 1      
Book Value of Mortgaged Properties 0      
Denver DRC | Murray, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 43      
Costs Capitalized Subsequent to Acquisition 149      
Land and Improvements 0      
Building and Improvements 192      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 192      
Accumulated Depreciation 18      
Book Value of Mortgaged Properties 0      
Baltimore ISAP | Baltimore, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 2      
Costs Capitalized Subsequent to Acquisition 92      
Land and Improvements 0      
Building and Improvements 94      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 94      
Accumulated Depreciation 7      
Book Value of Mortgaged Properties 0      
Philadelphia ISAP | Philadelphia, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 378      
Costs Capitalized Subsequent to Acquisition (117)      
Land and Improvements 0      
Building and Improvements 261      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 261      
Accumulated Depreciation 211      
Book Value of Mortgaged Properties 0      
Miami ISAP | Miami, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 82      
Costs Capitalized Subsequent to Acquisition 9      
Land and Improvements 0      
Building and Improvements 91      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 91      
Accumulated Depreciation 90      
Book Value of Mortgaged Properties 0      
Houston ISAP | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 26      
Costs Capitalized Subsequent to Acquisition 3      
Land and Improvements 0      
Building and Improvements 29      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 29      
Accumulated Depreciation 8      
Book Value of Mortgaged Properties 0      
Orlando ISAP | Orlando, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 18      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 18      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 18      
Accumulated Depreciation 18      
Book Value of Mortgaged Properties 0      
Atlanta ISAP | Atlanta, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 268      
Costs Capitalized Subsequent to Acquisition (54)      
Land and Improvements 0      
Building and Improvements 214      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 214      
Accumulated Depreciation 172      
Book Value of Mortgaged Properties 0      
New Orleans ISAP | New Orleans, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 54      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 54      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 54      
Accumulated Depreciation 45      
Book Value of Mortgaged Properties 0      
Washington DC ISAP | Fairfax, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 20      
Costs Capitalized Subsequent to Acquisition 2      
Land and Improvements 0      
Building and Improvements 22      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 22      
Accumulated Depreciation 18      
Book Value of Mortgaged Properties 0      
Charleston, SC ISAP | Fresno, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 39      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 39      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 39      
Accumulated Depreciation 37      
Book Value of Mortgaged Properties 0      
Chicago ISAP | Chicago, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 25      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 25      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 25      
Accumulated Depreciation 25      
Book Value of Mortgaged Properties 0      
Detroit ISAP | Detroit, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 193      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 193      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 193      
Accumulated Depreciation 13      
Book Value of Mortgaged Properties 0      
Denver ISAP | Centennial, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 173      
Costs Capitalized Subsequent to Acquisition (6)      
Land and Improvements 0      
Building and Improvements 167      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 167      
Accumulated Depreciation 132      
Book Value of Mortgaged Properties 0      
St. Louis MO ISAP | St. Louis, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 50      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 50      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 50      
Accumulated Depreciation 39      
Book Value of Mortgaged Properties 0      
Louisville, KY ISAP | Louisville, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 17      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 17      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 17      
Accumulated Depreciation 3      
Book Value of Mortgaged Properties 0      
Indianapolis, IN ISAP | Indianapolis, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 35      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 35      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 35      
Accumulated Depreciation 23      
Book Value of Mortgaged Properties 0      
San Francisco ISAP | San Francisco, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 272      
Costs Capitalized Subsequent to Acquisition (92)      
Land and Improvements 0      
Building and Improvements 180      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 180      
Accumulated Depreciation 144      
Book Value of Mortgaged Properties 0      
Salt Lake City ISAP | Murray, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 7      
Costs Capitalized Subsequent to Acquisition 17      
Land and Improvements 0      
Building and Improvements 24      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 24      
Accumulated Depreciation 21      
Book Value of Mortgaged Properties 0      
Seattle ISAP | Tukwila, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 40      
Costs Capitalized Subsequent to Acquisition 15      
Land and Improvements 0      
Building and Improvements 55      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 55      
Accumulated Depreciation 53      
Book Value of Mortgaged Properties 0      
Sacramento, CA | Sacramento, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 28      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 28      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 28      
Accumulated Depreciation 23      
Book Value of Mortgaged Properties 0      
Las Vegas, NV ISAP | Las Vegas, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 32      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 32      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 32      
Accumulated Depreciation 9      
Book Value of Mortgaged Properties 0      
Bronx ISAP | Bronx, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 31      
Costs Capitalized Subsequent to Acquisition 40      
Land and Improvements 0      
Building and Improvements 71      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 71      
Accumulated Depreciation 60      
Book Value of Mortgaged Properties 0      
Manhattan ISAP | New York, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 10      
Costs Capitalized Subsequent to Acquisition 10      
Land and Improvements 0      
Building and Improvements 20      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 20      
Accumulated Depreciation 18      
Book Value of Mortgaged Properties 0      
Queens ISAP | Jamaica, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 125      
Costs Capitalized Subsequent to Acquisition 7      
Land and Improvements 0      
Building and Improvements 132      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 132      
Accumulated Depreciation 106      
Book Value of Mortgaged Properties 0      
Boston ISAP | Burlington, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 80      
Costs Capitalized Subsequent to Acquisition 5      
Land and Improvements 0      
Building and Improvements 85      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 85      
Accumulated Depreciation 69      
Book Value of Mortgaged Properties 0      
Hartford ISAP | Hartford, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 23      
Costs Capitalized Subsequent to Acquisition 10      
Land and Improvements 0      
Building and Improvements 33      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 33      
Accumulated Depreciation 26      
Book Value of Mortgaged Properties 0      
Newark ISAP | Newark, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 29      
Costs Capitalized Subsequent to Acquisition 2      
Land and Improvements 0      
Building and Improvements 31      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 31      
Accumulated Depreciation 31      
Book Value of Mortgaged Properties 0      
Marlton ISAP | Marlton, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 2      
Costs Capitalized Subsequent to Acquisition 10      
Land and Improvements 0      
Building and Improvements 12      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 12      
Accumulated Depreciation 11      
Book Value of Mortgaged Properties 0      
Richmond, VA ISAP | Richmond, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 52      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 52      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 52      
Accumulated Depreciation 41      
Book Value of Mortgaged Properties 0      
Silver Spring, MD ISAP | Silver Springs, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 345      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 345      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 345      
Accumulated Depreciation 193      
Book Value of Mortgaged Properties 0      
Los Angeles ISAP | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 35      
Costs Capitalized Subsequent to Acquisition 45      
Land and Improvements 0      
Building and Improvements 80      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 80      
Accumulated Depreciation 71      
Book Value of Mortgaged Properties 0      
San Bernadino ISAP | San Bernadino, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 42      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 42      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 42      
Accumulated Depreciation 42      
Book Value of Mortgaged Properties 0      
Dallas ISAP | Dallas TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 17      
Costs Capitalized Subsequent to Acquisition 5      
Land and Improvements 0      
Building and Improvements 22      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 22      
Accumulated Depreciation 21      
Book Value of Mortgaged Properties 0      
El Paso ISAP | El Paso, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 2      
Costs Capitalized Subsequent to Acquisition 27      
Land and Improvements 0      
Building and Improvements 29      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 29      
Accumulated Depreciation 24      
Book Value of Mortgaged Properties 0      
Houston ISAP | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 21      
Costs Capitalized Subsequent to Acquisition 19      
Land and Improvements 0      
Building and Improvements 40      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 40      
Accumulated Depreciation 35      
Book Value of Mortgaged Properties 0      
Phoenix ISAP | Phoenix, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 79      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 79      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 79      
Accumulated Depreciation 65      
Book Value of Mortgaged Properties 0      
San Antonio ISAP | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 7      
Costs Capitalized Subsequent to Acquisition 50      
Land and Improvements 0      
Building and Improvements 57      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 57      
Accumulated Depreciation 48      
Book Value of Mortgaged Properties 0      
Bakersfield ISAP | Bakersfield, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 16      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 16      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 16      
Accumulated Depreciation 16      
Book Value of Mortgaged Properties 0      
Fresno, CA | Fresno, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 120      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 120      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 120      
Accumulated Depreciation 94      
Book Value of Mortgaged Properties 0      
Ventura C-Site | Camarillo, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 59      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 59      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 59      
Accumulated Depreciation 28      
Book Value of Mortgaged Properties 0      
SW Houston, TX ISAP | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 50      
Costs Capitalized Subsequent to Acquisition 5      
Land and Improvements 0      
Building and Improvements 55      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 55      
Accumulated Depreciation 32      
Book Value of Mortgaged Properties 0      
Arthur Gorrie Correctional Centre | Bisbane, Queensland AUS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 158      
Land and Improvements 0      
Building and Improvements 158      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 158      
Accumulated Depreciation 124      
Book Value of Mortgaged Properties 0      
Fulham Correctional Centre & Fulham Nalu Challenge Community Unit | West Sale, Victoria AUS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 1,985      
Land and Improvements 0      
Building and Improvements 1,985      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 1,985      
Accumulated Depreciation 799      
Book Value of Mortgaged Properties 0      
Junee Correctional Centre | Junee, New South Wales, AUS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 1,034      
Land and Improvements 0      
Building and Improvements 1,034      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 1,034      
Accumulated Depreciation 880      
Book Value of Mortgaged Properties 0      
Parklea Correctional Centre | Parklea, New South Wales, AUS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 946      
Land and Improvements 0      
Building and Improvements 946      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 946      
Accumulated Depreciation 942      
Book Value of Mortgaged Properties 0      
Dungavel House Immigration Removal Centre | Louis Trichardt, South Africa        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 83      
Land and Improvements 0      
Building and Improvements 83      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 83      
Accumulated Depreciation 83      
Book Value of Mortgaged Properties 0      
Kutama-Simthumle Correctional Centre | Louis Trichardt, South Africa        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 141      
Land and Improvements 0      
Building and Improvements 141      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 141      
Accumulated Depreciation 114      
Book Value of Mortgaged Properties 0      
Corporate Headquarters | Boca Raton, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 1,072      
Costs Capitalized Subsequent to Acquisition 6,815      
Land and Improvements 0      
Building and Improvements 7,887      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 7,887      
Accumulated Depreciation 7,254      
Book Value of Mortgaged Properties 0      
New Corporate Headquarters - CIP | Boca Raton, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 10,019      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 47,324      
Land and Improvements 10,019      
Building and Improvements 0      
Land Held for Development 0      
Development and Construction in Progress 47,324      
Total 57,343      
Accumulated Depreciation 0      
Book Value of Mortgaged Properties 0      
Central Regional Office | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 76      
Land and Improvements 0      
Building and Improvements 76      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 76      
Accumulated Depreciation 50      
Book Value of Mortgaged Properties 0      
Eastern Regional Office | Charlotte, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 23      
Land and Improvements 0      
Building and Improvements 23      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 23      
Accumulated Depreciation 17      
Book Value of Mortgaged Properties 0      
Western Regional Office | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 22      
Costs Capitalized Subsequent to Acquisition 134      
Land and Improvements 0      
Building and Improvements 156      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 156      
Accumulated Depreciation 107      
Book Value of Mortgaged Properties 0      
Anderson, IN Call Center | Anderson, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 114      
Original Buildings and Improvements 5,260      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 114      
Building and Improvements 5,260      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 5,374      
Accumulated Depreciation 250      
Book Value of Mortgaged Properties 0      
Boulder, CO Point II | Boulder, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 3,032      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 0      
Building and Improvements 3,032      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 3,032      
Accumulated Depreciation 748      
Book Value of Mortgaged Properties 0      
Protocol | Aurora, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 4      
Costs Capitalized Subsequent to Acquisition 229      
Land and Improvements 0      
Building and Improvements 233      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 233      
Accumulated Depreciation 130      
Book Value of Mortgaged Properties 0      
Sydney Office | Sydney, AUS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 0      
Original Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 9,455      
Land and Improvements 0      
Building and Improvements 9,455      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 9,455      
Accumulated Depreciation 835      
Book Value of Mortgaged Properties 0      
Compton, CA Office Building | Compton, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 974      
Original Buildings and Improvements 1,546      
Costs Capitalized Subsequent to Acquisition 0      
Land and Improvements 974      
Building and Improvements 1,546      
Land Held for Development 0      
Development and Construction in Progress 0      
Total 2,520      
Accumulated Depreciation 146      
Book Value of Mortgaged Properties 0      
Miscellaneous Investments | Various        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Original Land 18,406      
Original Buildings and Improvements 5,651      
Costs Capitalized Subsequent to Acquisition 2,746      
Land and Improvements 1,202      
Building and Improvements 6,102      
Land Held for Development 18,383      
Development and Construction in Progress 1,116      
Total 26,803      
Accumulated Depreciation 2,688      
Book Value of Mortgaged Properties $ 0