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Schedule of Real Estate and Accumulated Depreciation - Schedule of Real Estate Properties (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
USD ($)
land_parcel
Bed
Property
Unit
phase
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 36,803      
Beds | Bed 112,781      
Initial Cost, Land $ 649,403      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 7,145,299      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 512,301      
Total Costs, Land 654,985      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 7,652,018      
Total Costs, Total 8,307,003      
Accumulated Depreciation 1,537,100      
Encumbrances 782,741      
Aggregate costs for federal income tax purposes $ 8,700,000      
Number of properties | Property 167      
Owned Properties        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 34,680      
Beds | Bed 107,551      
Initial Cost, Land $ 649,403      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 6,998,527      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 489,574      
Total Costs, Land 654,985      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 7,482,519      
Total Costs, Total 8,137,504      
Accumulated Depreciation 1,442,789 $ 1,230,562 $ 1,035,027 $ 864,106
Encumbrances $ 693,584      
Owned Properties | The Callaway House - College Station        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 173      
Beds | Bed 538      
Initial Cost, Land $ 5,081      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 20,499      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 7,923      
Total Costs, Land 5,002      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 28,501      
Total Costs, Total 33,503      
Accumulated Depreciation 13,913      
Encumbrances $ 0      
Owned Properties | The Village at Science Drive        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 192      
Beds | Bed 732      
Initial Cost, Land $ 4,673      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 19,021      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 7,510      
Total Costs, Land 4,673      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 26,531      
Total Costs, Total 31,204      
Accumulated Depreciation 11,198      
Encumbrances $ 0      
Owned Properties | University Village at Boulder Creek        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 82      
Beds | Bed 309      
Initial Cost, Land $ 1,035      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 16,393      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 984      
Total Costs, Land 1,035      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 17,377      
Total Costs, Total 18,412      
Accumulated Depreciation 7,694      
Encumbrances $ 0      
Owned Properties | University Village - Fresno        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 105      
Beds | Bed 406      
Initial Cost, Land $ 929      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 15,168      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 654      
Total Costs, Land 929      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 15,822      
Total Costs, Total 16,751      
Accumulated Depreciation 6,255      
Encumbrances $ 0      
Owned Properties | University Village - Temple        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 220      
Beds | Bed 749      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 41,119      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,137      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 43,256      
Total Costs, Total 43,256      
Accumulated Depreciation 16,955      
Encumbrances $ 0      
Owned Properties | University Club Apartments        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 94      
Beds | Bed 376      
Initial Cost, Land $ 1,416      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 11,848      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,075      
Total Costs, Land 1,416      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 12,923      
Total Costs, Total 14,339      
Accumulated Depreciation 5,117      
Encumbrances $ 0      
Owned Properties | City Parc at Fry Street        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 136      
Beds | Bed 418      
Initial Cost, Land $ 1,902      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 17,678      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,104      
Total Costs, Land 1,902      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 21,782      
Total Costs, Total 23,684      
Accumulated Depreciation 8,018      
Encumbrances $ 0      
Owned Properties | Entrada Real        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 98      
Beds | Bed 363      
Initial Cost, Land $ 1,475      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 15,859      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,189      
Total Costs, Land 1,475      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 18,048      
Total Costs, Total 19,523      
Accumulated Depreciation 7,058      
Encumbrances $ 0      
Owned Properties | University Village at Sweethome        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 269      
Beds | Bed 828      
Initial Cost, Land $ 2,473      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 34,448      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,270      
Total Costs, Land 2,473      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 36,718      
Total Costs, Total 39,191      
Accumulated Depreciation 13,301      
Encumbrances $ 0      
Owned Properties | University Village - Tallahassee        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 217      
Beds | Bed 716      
Initial Cost, Land $ 4,322      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 26,225      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,770      
Total Costs, Land 4,322      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 30,995      
Total Costs, Total 35,317      
Accumulated Depreciation 11,564      
Encumbrances $ 0      
Owned Properties | Royal Village - Gainesville        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 118      
Beds | Bed 448      
Initial Cost, Land $ 2,386      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 15,153      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 5,232      
Total Costs, Land 2,363      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 20,408      
Total Costs, Total 22,771      
Accumulated Depreciation 7,107      
Encumbrances $ 0      
Owned Properties | Royal Lexington        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 94      
Beds | Bed 364      
Initial Cost, Land $ 2,848      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 12,783      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,250      
Total Costs, Land 2,848      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 17,033      
Total Costs, Total 19,881      
Accumulated Depreciation 6,374      
Encumbrances $ 0      
Owned Properties | Raiders Pass        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 264      
Beds | Bed 828      
Initial Cost, Land $ 3,877      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 32,445      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,836      
Total Costs, Land 3,877      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 37,281      
Total Costs, Total 41,158      
Accumulated Depreciation 13,465      
Encumbrances $ 0      
Owned Properties | Aggie Station        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 156      
Beds | Bed 450      
Initial Cost, Land $ 1,634      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 18,821      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 3,329      
Total Costs, Land 1,634      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 22,150      
Total Costs, Total 23,784      
Accumulated Depreciation 7,973      
Encumbrances $ 0      
Owned Properties | The Outpost - San Antonio        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 276      
Beds | Bed 828      
Initial Cost, Land $ 3,262      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 36,252      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 10,276      
Total Costs, Land 3,262      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 46,528      
Total Costs, Total 49,790      
Accumulated Depreciation 15,242      
Encumbrances $ 0      
Owned Properties | Callaway Villas        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 236      
Beds | Bed 704      
Initial Cost, Land $ 3,903      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 31,953      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 404      
Total Costs, Land 3,903      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 32,357      
Total Costs, Total 36,260      
Accumulated Depreciation 10,996      
Encumbrances $ 0      
Owned Properties | The Village on Sixth Avenue        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 248      
Beds | Bed 752      
Initial Cost, Land $ 2,763      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 22,480      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 8,749      
Total Costs, Land 2,763      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 31,229      
Total Costs, Total 33,992      
Accumulated Depreciation 11,025      
Encumbrances $ 0      
Owned Properties | Newtown Crossing        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 356      
Beds | Bed 942      
Initial Cost, Land $ 7,013      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 53,597      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 96      
Total Costs, Land 7,013      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 53,693      
Total Costs, Total 60,706      
Accumulated Depreciation 17,362      
Encumbrances $ 0      
Owned Properties | Olde Towne University Square        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 224      
Beds | Bed 550      
Initial Cost, Land $ 2,277      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 24,614      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) (509)      
Total Costs, Land 2,277      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 24,105      
Total Costs, Total 26,382      
Accumulated Depreciation 8,023      
Encumbrances $ 0      
Owned Properties | Peninsular Place        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 183      
Beds | Bed 478      
Initial Cost, Land $ 2,306      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 16,559      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,069      
Total Costs, Land 2,306      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 17,628      
Total Costs, Total 19,934      
Accumulated Depreciation 5,656      
Encumbrances $ 0      
Owned Properties | University Centre        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 234      
Beds | Bed 838      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 77,378      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 238      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 77,616      
Total Costs, Total 77,616      
Accumulated Depreciation 24,690      
Encumbrances $ 0      
Owned Properties | The Summit & Jacob Heights        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 258      
Beds | Bed 930      
Initial Cost, Land $ 2,318      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 36,464      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,983      
Total Costs, Land 2,318      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 39,447      
Total Costs, Total 41,765      
Accumulated Depreciation 12,404      
Encumbrances $ 0      
Owned Properties | GrandMarc Seven Corners        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 186      
Beds | Bed 440      
Initial Cost, Land $ 4,491      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 28,807      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,666      
Total Costs, Land 4,491      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 30,473      
Total Costs, Total 34,964      
Accumulated Depreciation 9,612      
Encumbrances $ 0      
Owned Properties | Aztec Corner        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 180      
Beds | Bed 606      
Initial Cost, Land $ 17,460      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 32,209      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,263      
Total Costs, Land 17,460      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 34,472      
Total Costs, Total 51,932      
Accumulated Depreciation 11,106      
Encumbrances $ 0      
Owned Properties | The Tower at Third        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 188      
Beds | Bed 375      
Initial Cost, Land $ 1,145      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 19,128      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 12,653      
Total Costs, Land 1,267      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 31,659      
Total Costs, Total 32,926      
Accumulated Depreciation 11,194      
Encumbrances $ 0      
Owned Properties | Willowtree Apartments and Tower        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 473      
Beds | Bed 851      
Initial Cost, Land $ 9,807      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 21,880      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,954      
Total Costs, Land 9,806      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 26,835      
Total Costs, Total 36,641      
Accumulated Depreciation 9,655      
Encumbrances $ 0      
Owned Properties | University Pointe        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 204      
Beds | Bed 682      
Initial Cost, Land $ 989      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 27,576      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,438      
Total Costs, Land 989      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 32,014      
Total Costs, Total 33,003      
Accumulated Depreciation 10,901      
Encumbrances $ 0      
Owned Properties | University Trails        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 240      
Beds | Bed 684      
Initial Cost, Land $ 1,183      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 25,173      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,236      
Total Costs, Land 1,183      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 29,409      
Total Costs, Total 30,592      
Accumulated Depreciation 10,226      
Encumbrances $ 0      
Owned Properties | Campus Trails        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 156      
Beds | Bed 480      
Initial Cost, Land $ 1,358      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 11,291      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 7,267      
Total Costs, Land 1,358      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 18,558      
Total Costs, Total 19,916      
Accumulated Depreciation 5,834      
Encumbrances $ 0      
Owned Properties | University Crossings (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 260      
Beds | Bed 1,016      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 50,668      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 42,469      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 93,137      
Total Costs, Total 93,137      
Accumulated Depreciation 31,148      
Encumbrances $ 0      
Owned Properties | Vista del Sol (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 613      
Beds | Bed 1,866      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 135,939      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 5,980      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 141,919      
Total Costs, Total 141,919      
Accumulated Depreciation 45,289      
Encumbrances $ 0      
Owned Properties | Villas at Chestnut Ridge        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 196      
Beds | Bed 552      
Initial Cost, Land $ 2,756      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 33,510      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,929      
Total Costs, Land 2,756      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 35,439      
Total Costs, Total 38,195      
Accumulated Depreciation 11,862      
Encumbrances $ 0      
Owned Properties | Barrett Honors College (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 604      
Beds | Bed 1,721      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 131,302      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 22,594      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 153,896      
Total Costs, Total 153,896      
Accumulated Depreciation 47,876      
Encumbrances $ 0      
Owned Properties | Sanctuary Lofts        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 201      
Beds | Bed 487      
Initial Cost, Land $ 2,960      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 18,180      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,758      
Total Costs, Land 2,959      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 22,939      
Total Costs, Total 25,898      
Accumulated Depreciation 7,784      
Encumbrances $ 0      
Owned Properties | The Edge - Charlotte        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 180      
Beds | Bed 720      
Initial Cost, Land $ 3,076      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 23,395      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 9,702      
Total Costs, Land 3,076      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 33,097      
Total Costs, Total 36,173      
Accumulated Depreciation 11,417      
Encumbrances $ 0      
Owned Properties | University Walk        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 120      
Beds | Bed 480      
Initial Cost, Land $ 2,016      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 14,599      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 3,557      
Total Costs, Land 2,016      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 18,156      
Total Costs, Total 20,172      
Accumulated Depreciation 6,044      
Encumbrances $ 0      
Owned Properties | Uptown        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 180      
Beds | Bed 528      
Initial Cost, Land $ 3,031      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 21,685      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,289      
Total Costs, Land 3,031      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 25,974      
Total Costs, Total 29,005      
Accumulated Depreciation 7,201      
Encumbrances $ 0      
Owned Properties | 2nd Avenue Centre        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 274      
Beds | Bed 868      
Initial Cost, Land $ 4,434      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 27,236      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,250      
Total Costs, Land 4,434      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 31,486      
Total Costs, Total 35,920      
Accumulated Depreciation 10,159      
Encumbrances $ 0      
Owned Properties | Villas at Babcock        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 204      
Beds | Bed 792      
Initial Cost, Land $ 4,642      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 30,901      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 448      
Total Costs, Land 4,642      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 31,349      
Total Costs, Total 35,991      
Accumulated Depreciation 11,452      
Encumbrances $ 0      
Owned Properties | Lobo Village (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 216      
Beds | Bed 864      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 42,490      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,266      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 43,756      
Total Costs, Total 43,756      
Accumulated Depreciation 11,603      
Encumbrances $ 0      
Owned Properties | Villas on Sycamore        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 170      
Beds | Bed 680      
Initial Cost, Land $ 3,000      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 24,640      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 517      
Total Costs, Land 3,000      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 25,157      
Total Costs, Total 28,157      
Accumulated Depreciation 9,714      
Encumbrances $ 0      
Owned Properties | 26 West        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 367      
Beds | Bed 1,026      
Initial Cost, Land $ 21,396      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 63,994      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 8,298      
Total Costs, Land 21,396      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 72,292      
Total Costs, Total 93,688      
Accumulated Depreciation 18,764      
Encumbrances $ 66,938      
Owned Properties | The Varsity        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 258      
Beds | Bed 901      
Initial Cost, Land $ 11,605      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 108,529      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,095      
Total Costs, Land 11,605      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 110,624      
Total Costs, Total 122,229      
Accumulated Depreciation 24,284      
Encumbrances $ 0      
Owned Properties | Avalon Heights        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 210      
Beds | Bed 754      
Initial Cost, Land $ 4,968      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 24,345      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 15,193      
Total Costs, Land 4,968      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 39,538      
Total Costs, Total 44,506      
Accumulated Depreciation 10,768      
Encumbrances $ 0      
Owned Properties | University Commons        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 164      
Beds | Bed 480      
Initial Cost, Land $ 12,559      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 19,010      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 3,325      
Total Costs, Land 12,559      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 22,335      
Total Costs, Total 34,894      
Accumulated Depreciation 5,865      
Encumbrances $ 0      
Owned Properties | Casas del Rio (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 283      
Beds | Bed 1,028      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 40,639      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,997      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 43,636      
Total Costs, Total 43,636      
Accumulated Depreciation 17,115      
Encumbrances $ 0      
Owned Properties | The Suites (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 439      
Beds | Bed 878      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 45,296      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 817      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 46,113      
Total Costs, Total 46,113      
Accumulated Depreciation 13,377      
Encumbrances $ 0      
Owned Properties | Hilltop Townhomes (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 144      
Beds | Bed 576      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 31,507      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 655      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 32,162      
Total Costs, Total 32,162      
Accumulated Depreciation 10,780      
Encumbrances $ 0      
Owned Properties | U Club on Frey        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 216      
Beds | Bed 864      
Initial Cost, Land $ 8,703      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 36,873      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,595      
Total Costs, Land 8,703      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 38,468      
Total Costs, Total 47,171      
Accumulated Depreciation 11,190      
Encumbrances $ 0      
Owned Properties | Campus Edge on UTA Boulevard        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 128      
Beds | Bed 488      
Initial Cost, Land $ 2,661      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 21,233      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,167      
Total Costs, Land 2,663      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 22,398      
Total Costs, Total 25,061      
Accumulated Depreciation 7,522      
Encumbrances $ 0      
Owned Properties | U Club Townhomes on Marion Pugh        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 160      
Beds | Bed 640      
Initial Cost, Land $ 6,722      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 26,546      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,912      
Total Costs, Land 6,722      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 28,458      
Total Costs, Total 35,180      
Accumulated Depreciation 9,854      
Encumbrances $ 0      
Owned Properties | Villas on Rensch        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 153      
Beds | Bed 610      
Initial Cost, Land $ 10,231      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 33,852      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,477      
Total Costs, Land 10,231      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 35,329      
Total Costs, Total 45,560      
Accumulated Depreciation 10,940      
Encumbrances $ 0      
Owned Properties | The Village at Overton Park        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 163      
Beds | Bed 612      
Initial Cost, Land $ 5,262      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 29,374      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,412      
Total Costs, Land 5,262      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 30,786      
Total Costs, Total 36,048      
Accumulated Depreciation 10,504      
Encumbrances $ 0      
Owned Properties | Casa de Oro (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 109      
Beds | Bed 365      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 12,362      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 301      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 12,663      
Total Costs, Total 12,663      
Accumulated Depreciation 4,589      
Encumbrances $ 0      
Owned Properties | The Villas at Vista del Sol (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 104      
Beds | Bed 400      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 20,421      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 511      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 20,932      
Total Costs, Total 20,932      
Accumulated Depreciation 7,675      
Encumbrances $ 0      
Owned Properties | The Block        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 669      
Beds | Bed 1,555      
Initial Cost, Land $ 22,270      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 141,430      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 14,963      
Total Costs, Land 22,497      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 156,166      
Total Costs, Total 178,663      
Accumulated Depreciation 32,538      
Encumbrances $ 94,117      
Owned Properties | University Pointe at College Station (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 282      
Beds | Bed 978      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 84,657      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,531      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 87,188      
Total Costs, Total 87,188      
Accumulated Depreciation 30,227      
Encumbrances $ 0      
Owned Properties | 309 Green        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 110      
Beds | Bed 416      
Initial Cost, Land $ 5,351      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 49,987      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,209      
Total Costs, Land 5,351      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 54,196      
Total Costs, Total 59,547      
Accumulated Depreciation 12,098      
Encumbrances $ 28,929      
Owned Properties | The Retreat        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 187      
Beds | Bed 780      
Initial Cost, Land $ 5,265      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 46,236      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,226      
Total Costs, Land 5,265      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 50,462      
Total Costs, Total 55,727      
Accumulated Depreciation 11,567      
Encumbrances $ 0      
Owned Properties | Lofts54        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 43      
Beds | Bed 172      
Initial Cost, Land $ 430      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 14,741      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,354      
Total Costs, Land 430      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 19,095      
Total Costs, Total 19,525      
Accumulated Depreciation 4,402      
Encumbrances $ 0      
Owned Properties | Campustown Rentals        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 264      
Beds | Bed 746      
Initial Cost, Land $ 2,382      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 40,190      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,559      
Total Costs, Land 2,382      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 44,749      
Total Costs, Total 47,131      
Accumulated Depreciation 11,872      
Encumbrances $ 0      
Owned Properties | Chauncey Square        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 158      
Beds | Bed 386      
Initial Cost, Land $ 2,522      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 40,013      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,955      
Total Costs, Land 2,522      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 41,968      
Total Costs, Total 44,490      
Accumulated Depreciation 9,627      
Encumbrances $ 0      
Owned Properties | Texan & Vintage        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 124      
Beds | Bed 311      
Initial Cost, Land $ 5,937      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 11,906      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 16,193      
Total Costs, Land 5,962      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 28,074      
Total Costs, Total 34,036      
Accumulated Depreciation 6,107      
Encumbrances $ 18,796      
Owned Properties | The Castilian        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 371      
Beds | Bed 623      
Initial Cost, Land $ 3,663      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 59,772      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 35,992      
Total Costs, Land 3,663      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 95,764      
Total Costs, Total 99,427      
Accumulated Depreciation 23,875      
Encumbrances $ 46,052      
Owned Properties | Bishops Square        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 134      
Beds | Bed 315      
Initial Cost, Land $ 1,206      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 17,878      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,598      
Total Costs, Land 1,206      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 20,476      
Total Costs, Total 21,682      
Accumulated Depreciation 5,242      
Encumbrances $ 10,634      
Owned Properties | Union        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 54      
Beds | Bed 120      
Initial Cost, Land $ 169      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 6,348      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,148      
Total Costs, Land 169      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 7,496      
Total Costs, Total 7,665      
Accumulated Depreciation 1,889      
Encumbrances $ 3,328      
Owned Properties | 922 Place        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 132      
Beds | Bed 468      
Initial Cost, Land $ 3,363      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 34,947      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 3,552      
Total Costs, Land 3,363      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 38,499      
Total Costs, Total 41,862      
Accumulated Depreciation 9,804      
Encumbrances $ 0      
Owned Properties | Campustown        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 452      
Beds | Bed 1,217      
Initial Cost, Land $ 1,818      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 77,894      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 10,465      
Total Costs, Land 1,818      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 88,359      
Total Costs, Total 90,177      
Accumulated Depreciation 19,055      
Encumbrances $ 0      
Owned Properties | River Mill        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 243      
Beds | Bed 461      
Initial Cost, Land $ 1,741      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 22,806      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 5,023      
Total Costs, Land 1,741      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 27,829      
Total Costs, Total 29,570      
Accumulated Depreciation 6,809      
Encumbrances $ 0      
Owned Properties | The Province - Greensboro        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 219      
Beds | Bed 696      
Initial Cost, Land $ 2,226      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 48,567      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,817      
Total Costs, Land 2,226      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 50,384      
Total Costs, Total 52,610      
Accumulated Depreciation 11,849      
Encumbrances $ 26,471      
Owned Properties | RAMZ Apartments on Broad        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 88      
Beds | Bed 172      
Initial Cost, Land $ 785      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 12,303      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 870      
Total Costs, Land 785      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 13,173      
Total Costs, Total 13,958      
Accumulated Depreciation 2,998      
Encumbrances $ 0      
Owned Properties | The Lofts at Capital Garage        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 36      
Beds | Bed 144      
Initial Cost, Land $ 313      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 3,581      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 799      
Total Costs, Land 313      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 4,380      
Total Costs, Total 4,693      
Accumulated Depreciation 1,212      
Encumbrances $ 0      
Owned Properties | 25Twenty        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 249      
Beds | Bed 562      
Initial Cost, Land $ 2,226      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 33,429      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,447      
Total Costs, Land 2,226      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 34,876      
Total Costs, Total 37,102      
Accumulated Depreciation 9,308      
Encumbrances $ 24,723      
Owned Properties | The Province - Louisville        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 366      
Beds | Bed 858      
Initial Cost, Land $ 4,392      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 63,068      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,202      
Total Costs, Land 4,392      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 65,270      
Total Costs, Total 69,662      
Accumulated Depreciation 15,743      
Encumbrances $ 34,353      
Owned Properties | The Province - Rochester        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 336      
Beds | Bed 816      
Initial Cost, Land $ 3,798      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 70,955      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 3,732      
Total Costs, Land 3,798      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 74,687      
Total Costs, Total 78,485      
Accumulated Depreciation 17,668      
Encumbrances $ 32,313      
Owned Properties | 5 Twenty Four and 5 Twenty Five Angliana        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 376      
Beds | Bed 1,060      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 60,448      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 7,401      
Total Costs, Land 5,214      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 62,635      
Total Costs, Total 67,849      
Accumulated Depreciation 15,386      
Encumbrances $ 0      
Owned Properties | The Province - Tampa        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 287      
Beds | Bed 947      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 52,943      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 5,394      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 58,337      
Total Costs, Total 58,337      
Accumulated Depreciation 13,637      
Encumbrances $ 30,840      
Owned Properties | U Pointe Kennesaw        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 216      
Beds | Bed 795      
Initial Cost, Land $ 1,482      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 61,654      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 6,385      
Total Costs, Land 1,482      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 68,039      
Total Costs, Total 69,521      
Accumulated Depreciation 17,301      
Encumbrances $ 0      
Owned Properties | The Cottages of Durham        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 141      
Beds | Bed 619      
Initial Cost, Land $ 3,955      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 41,421      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,758      
Total Costs, Land 3,955      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 44,179      
Total Costs, Total 48,134      
Accumulated Depreciation 12,655      
Encumbrances $ 0      
Owned Properties | University Edge        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 201      
Beds | Bed 608      
Initial Cost, Land $ 4,500      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 26,385      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,576      
Total Costs, Land 4,500      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 27,961      
Total Costs, Total 32,461      
Accumulated Depreciation 6,309      
Encumbrances $ 0      
Owned Properties | The Lodges of East Lansing        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 364      
Beds | Bed 1,049      
Initial Cost, Land $ 6,472      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 89,231      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,973      
Total Costs, Land 6,472      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 92,204      
Total Costs, Total 98,676      
Accumulated Depreciation 20,607      
Encumbrances $ 27,935      
Owned Properties | 7th Street Station        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 82      
Beds | Bed 309      
Initial Cost, Land $ 9,792      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 16,472      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 615      
Total Costs, Land 9,792      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 17,087      
Total Costs, Total 26,879      
Accumulated Depreciation 4,212      
Encumbrances $ 0      
Owned Properties | The Callaway House - Austin        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 219      
Beds | Bed 753      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 61,550      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,224      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 62,774      
Total Costs, Total 62,774      
Accumulated Depreciation 16,211      
Encumbrances $ 80,726      
Owned Properties | Manzanita Hall (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 241      
Beds | Bed 816      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 48,781      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,488      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 50,269      
Total Costs, Total 50,269      
Accumulated Depreciation 14,061      
Encumbrances $ 0      
Owned Properties | University View (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 96      
Beds | Bed 336      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 14,683      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 251      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 14,934      
Total Costs, Total 14,934      
Accumulated Depreciation 4,141      
Encumbrances $ 0      
Owned Properties | U Club Townhomes at Overton Park        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 112      
Beds | Bed 448      
Initial Cost, Land $ 7,775      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 21,483      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,014      
Total Costs, Land 7,775      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 22,497      
Total Costs, Total 30,272      
Accumulated Depreciation 6,179      
Encumbrances $ 0      
Owned Properties | 601 Copeland        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 81      
Beds | Bed 283      
Initial Cost, Land $ 1,457      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 26,699      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 591      
Total Costs, Land 1,457      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 27,290      
Total Costs, Total 28,747      
Accumulated Depreciation 6,315      
Encumbrances $ 0      
Owned Properties | The Townhomes at Newtown Crossing        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 152      
Beds | Bed 608      
Initial Cost, Land $ 7,745      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 32,074      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 656      
Total Costs, Land 7,745      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 32,730      
Total Costs, Total 40,475      
Accumulated Depreciation 7,716      
Encumbrances $ 0      
Owned Properties | Chestnut Square (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 220      
Beds | Bed 861      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 98,369      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,964      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 101,333      
Total Costs, Total 101,333      
Accumulated Depreciation 24,574      
Encumbrances $ 0      
Owned Properties | Park Point - Rochester        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 300      
Beds | Bed 924      
Initial Cost, Land $ 7,827      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 73,495      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 5,235      
Total Costs, Land 7,827      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 78,730      
Total Costs, Total 86,557      
Accumulated Depreciation 18,069      
Encumbrances $ 70,000      
Owned Properties | U Centre at Fry Street        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 194      
Beds | Bed 614      
Initial Cost, Land $ 2,902      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 47,700      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,901      
Total Costs, Land 2,902      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 50,601      
Total Costs, Total 53,503      
Accumulated Depreciation 10,077      
Encumbrances $ 0      
Owned Properties | Cardinal Towne        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 255      
Beds | Bed 545      
Initial Cost, Land $ 6,547      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 53,809      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 3,942      
Total Costs, Land 6,547      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 57,751      
Total Costs, Total 64,298      
Accumulated Depreciation 11,408      
Encumbrances $ 0      
Owned Properties | Merwick Stanworth (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 325      
Beds | Bed 595      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 79,598      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) (692)      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 78,906      
Total Costs, Total 78,906      
Accumulated Depreciation 10,921      
Encumbrances $ 0      
Owned Properties | Plaza on University        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 364      
Beds | Bed 1,313      
Initial Cost, Land $ 23,987      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 85,584      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,373      
Total Costs, Land 23,987      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 89,957      
Total Costs, Total 113,944      
Accumulated Depreciation 19,308      
Encumbrances $ 0      
Owned Properties | U Centre at Northgate (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 196      
Beds | Bed 784      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 35,663      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 503      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 36,166      
Total Costs, Total 36,166      
Accumulated Depreciation 8,088      
Encumbrances $ 0      
Owned Properties | University Walk        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 177      
Beds | Bed 526      
Initial Cost, Land $ 4,341      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 29,073      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 938      
Total Costs, Land 4,341      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 30,011      
Total Costs, Total 34,352      
Accumulated Depreciation 5,185      
Encumbrances $ 0      
Owned Properties | U Club on Woodward        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 236      
Beds | Bed 944      
Initial Cost, Land $ 16,350      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 46,982      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 867      
Total Costs, Land 16,349      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 47,850      
Total Costs, Total 64,199      
Accumulated Depreciation 10,937      
Encumbrances $ 0      
Owned Properties | Park Point - Syracuse        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 66      
Beds | Bed 226      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 25,725      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 3,582      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 29,307      
Total Costs, Total 29,307      
Accumulated Depreciation 4,671      
Encumbrances $ 10,586      
Owned Properties | 1200 West Marshall        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 136      
Beds | Bed 406      
Initial Cost, Land $ 4,397      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 33,908      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,020      
Total Costs, Land 4,397      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 35,928      
Total Costs, Total 40,325      
Accumulated Depreciation 6,104      
Encumbrances $ 0      
Owned Properties | 8 1/2 Canal Street        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 160      
Beds | Bed 540      
Initial Cost, Land $ 2,797      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 45,394      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,359      
Total Costs, Land 2,797      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 47,753      
Total Costs, Total 50,550      
Accumulated Depreciation 7,272      
Encumbrances $ 0      
Owned Properties | Vistas San Marcos        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 255      
Beds | Bed 600      
Initial Cost, Land $ 586      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 45,761      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 6,157      
Total Costs, Land 586      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 51,918      
Total Costs, Total 52,504      
Accumulated Depreciation 10,791      
Encumbrances $ 0      
Owned Properties | Crest at Pearl        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 141      
Beds | Bed 343      
Initial Cost, Land $ 4,395      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 36,268      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,959      
Total Costs, Land 4,491      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 38,131      
Total Costs, Total 42,622      
Accumulated Depreciation 6,122      
Encumbrances $ 23,372      
Owned Properties | U Club Binghamton        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 326      
Beds | Bed 1,272      
Initial Cost, Land $ 15,858      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 92,372      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 3,194      
Total Costs, Land 15,858      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 95,566      
Total Costs, Total 111,424      
Accumulated Depreciation 11,154      
Encumbrances $ 0      
Owned Properties | Stadium Centre        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 447      
Beds | Bed 970      
Initial Cost, Land $ 9,249      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 100,854      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 7,641      
Total Costs, Land 9,249      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 108,495      
Total Costs, Total 117,744      
Accumulated Depreciation 15,299      
Encumbrances $ 63,471      
Owned Properties | 160 Ross        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 182      
Beds | Bed 642      
Initial Cost, Land $ 2,962      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 38,478      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,013      
Total Costs, Land 2,962      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 39,491      
Total Costs, Total 42,453      
Accumulated Depreciation 7,060      
Encumbrances $ 0      
Owned Properties | The Summit at University City (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 351      
Beds | Bed 1,315      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 154,770      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,786      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 156,556      
Total Costs, Total 156,556      
Accumulated Depreciation 22,183      
Encumbrances $ 0      
Owned Properties | 2125 Franklin        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 192      
Beds | Bed 734      
Initial Cost, Land $ 8,299      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 55,716      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 587      
Total Costs, Land 8,299      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 56,303      
Total Costs, Total 64,602      
Accumulated Depreciation 8,757      
Encumbrances $ 0      
Owned Properties | University Crossings - Charlotte        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 187      
Beds | Bed 546      
Initial Cost, Land $ 645      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 36,838      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 4,618      
Total Costs, Land 645      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 41,456      
Total Costs, Total 42,101      
Accumulated Depreciation 4,908      
Encumbrances $ 0      
Owned Properties | U Club on 28th        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 100      
Beds | Bed 398      
Initial Cost, Land $ 9,725      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 45,788      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 396      
Total Costs, Land 9,725      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 46,184      
Total Costs, Total 55,909      
Accumulated Depreciation 5,490      
Encumbrances $ 0      
Owned Properties | Currie Hall (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 178      
Beds | Bed 456      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 49,987      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 344      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 50,331      
Total Costs, Total 50,331      
Accumulated Depreciation 6,384      
Encumbrances $ 0      
Owned Properties | University Pointe (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 134      
Beds | Bed 531      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 44,035      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 262      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 44,297      
Total Costs, Total 44,297      
Accumulated Depreciation 5,377      
Encumbrances $ 0      
Owned Properties | Fairview House (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 107      
Beds | Bed 633      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 38,144      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 193      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 38,337      
Total Costs, Total 38,337      
Accumulated Depreciation 5,544      
Encumbrances $ 0      
Owned Properties | U Club Sunnyside        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 134      
Beds | Bed 534      
Initial Cost, Land $ 7,423      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 41,582      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 550      
Total Costs, Land 7,423      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 42,132      
Total Costs, Total 49,555      
Accumulated Depreciation 5,130      
Encumbrances $ 0      
Owned Properties | U Point        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 54      
Beds | Bed 163      
Initial Cost, Land $ 1,425      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 17,325      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,406      
Total Costs, Land 1,425      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 19,731      
Total Costs, Total 21,156      
Accumulated Depreciation 2,278      
Encumbrances $ 0      
Owned Properties | The Arlie        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 169      
Beds | Bed 598      
Initial Cost, Land $ 1,350      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 43,352      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,905      
Total Costs, Land 1,350      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 45,257      
Total Costs, Total 46,607      
Accumulated Depreciation 5,014      
Encumbrances $ 0      
Owned Properties | TWELVE at U District        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 283      
Beds | Bed 384      
Initial Cost, Land $ 13,013      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 98,115      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 3,494      
Total Costs, Land 13,013      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 101,609      
Total Costs, Total 114,622      
Accumulated Depreciation 7,136      
Encumbrances $ 0      
Owned Properties | The 515        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 183      
Beds | Bed 513      
Initial Cost, Land $ 1,611      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 68,953      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,542      
Total Costs, Land 1,611      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 70,495      
Total Costs, Total 72,106      
Accumulated Depreciation 4,879      
Encumbrances $ 0      
Owned Properties | State        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 220      
Beds | Bed 665      
Initial Cost, Land $ 3,448      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 66,774      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,409      
Total Costs, Land 3,448      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 69,183      
Total Costs, Total 72,631      
Accumulated Depreciation 5,635      
Encumbrances $ 0      
Owned Properties | The James        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 366      
Beds | Bed 850      
Initial Cost, Land $ 18,871      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 118,096      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,048      
Total Costs, Land 18,871      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 120,144      
Total Costs, Total 139,015      
Accumulated Depreciation 9,354      
Encumbrances $ 0      
Owned Properties | Bridges @ 11th        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 184      
Beds | Bed 258      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 58,825      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,413      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 60,238      
Total Costs, Total 60,238      
Accumulated Depreciation 3,695      
Encumbrances $ 0      
Owned Properties | Hub U District Seattle        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 111      
Beds | Bed 248      
Initial Cost, Land $ 5,700      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 56,355      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,318      
Total Costs, Land 5,700      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 57,673      
Total Costs, Total 63,373      
Accumulated Depreciation 4,265      
Encumbrances $ 0      
Owned Properties | Tooker House (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 429      
Beds | Bed 1,594      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 103,897      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) (179)      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 103,718      
Total Costs, Total 103,718      
Accumulated Depreciation 9,541      
Encumbrances $ 0      
Owned Properties | SkyView (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 163      
Beds | Bed 626      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 57,578      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 247      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 57,825      
Total Costs, Total 57,825      
Accumulated Depreciation 4,750      
Encumbrances $ 0      
Owned Properties | University Square (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 143      
Beds | Bed 466      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 25,635      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 8      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 25,643      
Total Costs, Total 25,643      
Accumulated Depreciation 2,384      
Encumbrances $ 0      
Owned Properties | U Centre on Turner        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 182      
Beds | Bed 718      
Initial Cost, Land $ 14,000      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 55,456      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 36      
Total Costs, Land 14,001      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 55,491      
Total Costs, Total 69,492      
Accumulated Depreciation 4,792      
Encumbrances $ 0      
Owned Properties | U Pointe on Speight        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 180      
Beds | Bed 700      
Initial Cost, Land $ 4,705      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 46,160      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 333      
Total Costs, Land 4,705      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 46,493      
Total Costs, Total 51,198      
Accumulated Depreciation 3,897      
Encumbrances $ 0      
Owned Properties | 21Hundred at Overton Park        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 296      
Beds | Bed 1,204      
Initial Cost, Land $ 16,767      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 64,057      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 834      
Total Costs, Land 16,767      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 64,891      
Total Costs, Total 81,658      
Accumulated Depreciation 5,766      
Encumbrances $ 0      
Owned Properties | The Suites at Third        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 63      
Beds | Bed 251      
Initial Cost, Land $ 831      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 22,384      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) (37)      
Total Costs, Land 831      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 22,347      
Total Costs, Total 23,178      
Accumulated Depreciation 1,924      
Encumbrances $ 0      
Owned Properties | Callaway House Apartments        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 386      
Beds | Bed 915      
Initial Cost, Land $ 12,651      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 78,220      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 582      
Total Costs, Land 12,651      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 78,802      
Total Costs, Total 91,453      
Accumulated Depreciation 6,910      
Encumbrances $ 0      
Owned Properties | U Centre on College        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 127      
Beds | Bed 418      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 41,607      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) (187)      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 41,420      
Total Costs, Total 41,420      
Accumulated Depreciation 3,332      
Encumbrances $ 0      
Owned Properties | David Blackwell Hall (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 412      
Beds | Bed 780      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 96,891      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 96,891      
Total Costs, Total 96,891      
Accumulated Depreciation 4,430      
Encumbrances $ 0      
Owned Properties | Gladding Residence Center (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 592      
Beds | Bed 1,524      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 94,368      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 418      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 94,786      
Total Costs, Total 94,786      
Accumulated Depreciation 4,723      
Encumbrances $ 0      
Owned Properties | Irvington House (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 197      
Beds | Bed 648      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 36,187      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 36,187      
Total Costs, Total 36,187      
Accumulated Depreciation 1,848      
Encumbrances $ 0      
Owned Properties | U Club Townhomes at Oxford        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 111      
Beds | Bed 413      
Initial Cost, Land $ 10,000      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 30,885      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 19      
Total Costs, Land 10,000      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 30,904      
Total Costs, Total 40,904      
Accumulated Depreciation 1,325      
Encumbrances $ 0      
Owned Properties | Greek Leadership Village (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 498      
Beds | Bed 957      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 69,351      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 44      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 69,395      
Total Costs, Total 69,395      
Accumulated Depreciation 3,480      
Encumbrances $ 0      
Owned Properties | NAU Honors College (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 318      
Beds | Bed 636      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 41,222      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 41,222      
Total Costs, Total 41,222      
Accumulated Depreciation 2,147      
Encumbrances $ 0      
Owned Properties | U Club Townhomes at Oxford        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 132      
Beds | Bed 528      
Initial Cost, Land $ 5,115      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 39,239      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 5,115      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 39,239      
Total Costs, Total 44,354      
Accumulated Depreciation 2,035      
Encumbrances $ 0      
Owned Properties | Hub Ann Arbor        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 124      
Beds | Bed 310      
Initial Cost, Land $ 7,050      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 42,865      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,314      
Total Costs, Land 7,050      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 44,179      
Total Costs, Total 51,229      
Accumulated Depreciation 2,107      
Encumbrances $ 0      
Owned Properties | Hub Flagstaff        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 198      
Beds | Bed 591      
Initial Cost, Land $ 5,397      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 56,626      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 660      
Total Costs, Land 5,397      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 57,286      
Total Costs, Total 62,683      
Accumulated Depreciation 2,712      
Encumbrances $ 0      
Owned Properties | Campus Edge on Pierce        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 289      
Beds | Bed 598      
Initial Cost, Land $ 6,881      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 55,818      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 734      
Total Costs, Land 6,881      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 56,552      
Total Costs, Total 63,433      
Accumulated Depreciation 2,855      
Encumbrances $ 0      
Owned Properties | 191 College        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 127      
Beds | Bed 495      
Initial Cost, Land $ 5,434      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 55,620      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 5,434      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 55,620      
Total Costs, Total 61,054      
Accumulated Depreciation 787      
Encumbrances $ 0      
Owned Properties | LightView (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 214      
Beds | Bed 825      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 152,040      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 152,040      
Total Costs, Total 152,040      
Accumulated Depreciation 1,957      
Encumbrances $ 0      
Owned Properties | University of Arizona Honors College (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 319      
Beds | Bed 1,056      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 76,166      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 76,166      
Total Costs, Total 76,166      
Accumulated Depreciation 1,152      
Encumbrances $ 0      
Owned Properties | The Flex-Stadium Centre        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 78      
Beds | Bed 340      
Initial Cost, Land $ 8,559      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 26,516      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 8,559      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 26,516      
Total Costs, Total 35,075      
Accumulated Depreciation 374      
Encumbrances $ 0      
Owned Properties | 959 Franklin        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 230      
Beds | Bed 443      
Initial Cost, Land $ 5,026      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 63,040      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 5,026      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 63,040      
Total Costs, Total 68,066      
Accumulated Depreciation 635      
Encumbrances $ 0      
Owned Properties | Disney College Program Phases I-V (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 2,614      
Beds | Bed 10,440      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 224,185      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 224,185      
Total Costs, Total 224,185      
Accumulated Depreciation 0      
Encumbrances $ 0      
Number of project phases | phase 10      
Owned Properties | Currie Hall Phase II [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 95      
Beds | Bed 272      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 22,681      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 22,681      
Total Costs, Total 22,681      
Accumulated Depreciation 0      
Encumbrances $ 0      
Owned Properties | Holloway Residences (ACE)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 169      
Beds | Bed 584      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 89,615      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 89,615      
Total Costs, Total 89,615      
Accumulated Depreciation 0      
Encumbrances $ 0      
Owned Properties | Undeveloped land parcels        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 0      
Beds | Bed 0      
Initial Cost, Land $ 55,896      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 651      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 0      
Total Costs, Land 55,896      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 651      
Total Costs, Total 56,547      
Accumulated Depreciation 543      
Encumbrances $ 0      
Number of Land Parcels Disposed | land_parcel 2      
On-campus participating properties, net        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 2,123      
Beds | Bed 5,230      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 146,772      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 22,727      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 169,499      
Total Costs, Total 169,499      
Accumulated Depreciation 94,311 84,925 $ 78,192 $ 77,132
Encumbrances 89,157      
Unamortized deferred financing costs $ (418) (525)    
Number of properties | Property 6      
On-campus participating properties, net | University Village & University Village Northwest at Prairie View (9)        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 648      
Beds | Bed 2,064      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 40,734      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 9,960      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 50,694      
Total Costs, Total 50,694      
Accumulated Depreciation 38,663      
Encumbrances $ 10,464      
Number of properties | Property 2      
Number of properties converted | Property 1      
On-campus participating properties, net | University Village at Laredo        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 84      
Beds | Bed 250      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 5,844      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,433      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 7,277      
Total Costs, Total 7,277      
Accumulated Depreciation 5,866      
Encumbrances $ 1,601      
On-campus participating properties, net | University College at Prairie View        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 756      
Beds | Bed 1,470      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 22,650      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 6,579      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 29,229      
Total Costs, Total 29,229      
Accumulated Depreciation 20,824      
Encumbrances $ 11,150      
On-campus participating properties, net | Cullen Oaks        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 411      
Beds | Bed 879      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 33,910      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 2,995      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 36,905      
Total Costs, Total 36,905      
Accumulated Depreciation 19,166      
Encumbrances $ 25,313      
On-campus participating properties, net | College Park        
Real Estate and Accumulated Depreciation [Line Items]        
Units | Unit 224      
Beds | Bed 567      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements and Furniture, Fixtures and Equipment 43,634      
Costs Capitalized Subsequent to Acquisition / Initial Development (1) 1,760      
Total Costs, Land 0      
Total Costs, Buildings and Improvements and Furniture, Fixtures and Equipment 45,394      
Total Costs, Total 45,394      
Accumulated Depreciation 9,792      
Encumbrances 40,629      
Mortgages        
Real Estate and Accumulated Depreciation [Line Items]        
Unamortized debt premiums 6,400 11,600    
Unamortized deferred financing costs (1,700)      
Mortgages | Owned Properties        
Real Estate and Accumulated Depreciation [Line Items]        
Unamortized debt premiums 6,596 11,579    
Unamortized deferred financing costs $ (1,294) $ (1,757)