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ACQUISITIONS, DEVELOPMENT PROJECTS PLACED IN SERVICE AND DISPOSITIONS - Property Dispositions (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
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Apr. 30, 2018 USD ($) ft² unit | Jan. 31, 2018 USD ($) | Oct. 31, 2017 USD ($) | Jul. 31, 2017 USD ($) | Apr. 30, 2017 USD ($) ft² property | Jan. 31, 2017 USD ($) | Oct. 31, 2016 USD ($) | Jul. 31, 2016 USD ($) | Apr. 30, 2018 USD ($) ft² property unit | Apr. 30, 2017 USD ($) ft² property | Apr. 30, 2016 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price | $ 44,185 | $ 42,716 | $ 41,866 | $ 40,978 | $ 42,811 | $ 39,797 | $ 39,195 | $ 38,301 | $ 169,745 | $ 160,104 | $ 145,500
Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | 515,130 | 286,926 |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 184,268 | 74,949 |
Multi-Family Residential [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  | 15 |  |
Sales price |  |  |  |  |  |  |  |  | $ 18,913 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | 3,343 |  |
Multi-Family Residential [Member] | Disposed of by Sale [Member] | Multifamily 327 Unit Minot Nd [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | 12,263 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 701 |  |
Number of apartment units, dispositions | unit | 327 |  |  |  |  |  |  |  | 327 |  |
Multi-Family Residential [Member] | Disposed of by Sale [Member] | Crown - Rochester, MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 5,700 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 2,382 |  |
Number of apartment units, dispositions | unit | 48 |  |  |  |  |  |  |  | 48 |  |
Multi-Family Residential [Member] | Disposed of by Sale [Member] | Northern Valley - Rochester, MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 950 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 260 |  |
Number of apartment units, dispositions | unit | 16 |  |  |  |  |  |  |  | 16 |  |
Multi-Family Residential [Member] | Disposed of by Sale [Member] | Minot Southgate Retail - Minot, ND [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred gain on sale of properties | $ 626 |  |  |  |  |  |  |  | $ 626 |  |
Multi-Family Residential [Member] | Disposed of by Sale [Member] | Pinecone Villas Sartell Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  |  | 3,540 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 808 |
Number of apartment units, dispositions | property |  |  |  |  | 24 |  |  |  |  | 24 |
Senior Housing Properties [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  | 2 |  |
Healthcare [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  | 28 |  |
Sales price |  |  |  |  |  |  |  |  |  | $ 265,736 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 62,746 |
Healthcare [Member] | Disposed of by Sale [Member] | Idaho Spring Creek Senior Housing Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  |  | 9 |
Sales price |  |  |  |  |  |  |  |  |  | $ 43,900 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 6,503 |
Area of real estate property | ft² |  |  |  |  | 189,244 |  |  |  |  | 189,244 |
Healthcare [Member] | Disposed of by Sale [Member] | Five Edgewood Vista Senior Housing Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  |  | 5 |
Sales price |  |  |  |  |  |  |  |  |  | $ 69,928 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 19,535 |
Area of real estate property | ft² |  |  |  |  | 426,652 |  |  |  |  | 426,652 |
Healthcare [Member] | Disposed of by Sale [Member] | Wyoming Senior Housing Portfolio [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  |  | 5 |
Sales price |  |  |  |  |  |  |  |  |  | $ 49,600 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 4,131 |
Area of real estate property | ft² |  |  |  |  | 286,854 |  |  |  |  | 286,854 |
Healthcare [Member] | Disposed of by Sale [Member] | Nine Edgewood Vista Senior Housing Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  |  | 9 |
Sales price |  |  |  |  |  |  |  |  |  | $ 30,700 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 6,619 |
Area of real estate property | ft² |  |  |  |  | 169,001 |  |  |  |  | 169,001 |
Healthcare [Member] | Disposed of by Sale [Member] | Four Edgewood Vista Senior Housing Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  |  | 4 |
Sales price |  |  |  |  |  |  |  |  |  | $ 35,348 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 20,837 |
Area of real estate property | ft² |  |  |  |  | 169,562 |  |  |  |  | 169,562 |
Healthcare [Member] | Disposed of by Sale [Member] | Healtheast St John And Woodwinds Maplewood And Woodbury Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  |  | $ 20,700 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 6,923 |
Area of real estate property | ft² |  |  |  |  | 114,316 |  |  |  |  | 114,316 |
Healthcare [Member] | Disposed of by Sale [Member] | Sartell 2000 23 Rd Street South Sartell Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  |  | $ 5,600 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ (323) |
Area of real estate property | ft² |  |  |  |  | 59,760 |  |  |  |  | 59,760 |
Healthcare [Member] | Disposed of by Sale [Member] | Legends At Heritage Place Sartell Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  |  | $ 9,960 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ (1,479) |
Area of real estate property | ft² |  |  |  |  | 98,174 |  |  |  |  | 98,174 |
Retail Site [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  | 5 |  |
Unimproved Land [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  | 2 |  |
Unimproved Land [Member] | Disposed of by Sale [Member] | Bismarck 4916 - Bismarck, ND [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 3,175 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | (13) |  |
Unimproved Land [Member] | Disposed of by Sale [Member] | Grand Chute, Wisconsin, Unimproved Land [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  |  | $ 250 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | (24) |
Other [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | 493,042 | 17,400 |
Gain/(Loss) |  |  |  |  |  |  |  |  | 180,938 | 11,419 |
Other [Member] | Disposed of by Sale [Member] | Minot Southgate Retail - Minot, ND [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | 3,440 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 108 |  |
Area of real estate property | ft² | 4,998 |  |  |  |  |  |  |  | 4,998 |  |
Other [Member] | Disposed of by Sale [Member] | Lexington Commerce Center Eagan Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 9,000 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 5,037 |  |
Area of real estate property | ft² | 90,260 |  |  |  |  |  |  |  | 90,260 |  |
Other [Member] | Disposed of by Sale [Member] | Eagan 1440 Duckwood Medical - Eagan, MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 2,100 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 214 |  |
Area of real estate property | ft² | 17,640 |  |  |  |  |  |  |  | 17,640 |  |
Other [Member] | Disposed of by Sale [Member] | Edgewood Vista Hermantown Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 36,884 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 12,187 |  |
Area of real estate property | ft² | 279,834 |  |  |  |  |  |  |  | 279,834 |  |
Other [Member] | Disposed of by Sale [Member] | Urbandale - Urbandale IA [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 16,700 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 3,843 |  |
Area of real estate property | ft² | 518,161 |  |  |  |  |  |  |  | 518,161 |  |
Other [Member] | Disposed of by Sale [Member] | Long Lake Road - Roseville MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 18,650 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 5,884 |  |
Area of real estate property | ft² | 36,053 |  |  |  |  |  |  |  | 36,053 |  |
Other [Member] | Disposed of by Sale [Member] | Healthcare Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 370,268 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 137,490 |  |
Area of real estate property | ft² | 1,205,432 |  |  |  |  |  |  |  | 1,205,432 |  |
Deposits held in escrow | $ 2,500 |  |  |  |  |  |  |  | $ 2,500 |  |
Other [Member] | Disposed of by Sale [Member] | Garden View - St. Paul MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | 14,000 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 7,809 |  |
Area of real estate property | ft² | 43,404 |  |  |  |  |  |  |  | 43,404 |  |
Other [Member] | Disposed of by Sale [Member] | Ritchie Medical - St. Paul MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 16,500 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 6,081 |  |
Area of real estate property | ft² | 52,116 |  |  |  |  |  |  |  | 52,116 |  |
Other [Member] | Disposed of by Sale [Member] | Bismarck 715 East Broadway - Bismarck, ND [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | $ 5,500 |  |
Gain/(Loss) |  |  |  |  |  |  |  |  | $ 2,285 |  |
Area of real estate property | ft² | 22,187 |  |  |  |  |  |  |  | 22,187 |  |
Other [Member] | Disposed of by Sale [Member] | Stone Container Fargo Nd [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  |  | 13,400 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 8,982 |
Area of real estate property | ft² |  |  |  |  | 195,075 |  |  |  |  | 195,075 |
Other [Member] | Disposed of by Sale [Member] | Grand Forks Carmike Grand Forks Nd [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  |  | $ 4,000 |
Gain/(Loss) |  |  |  |  |  |  |  |  |  | $ 2,437 |
Area of real estate property | ft² |  |  |  |  | 28,528 |  |  |  |  | 28,528 |
Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | $ 73,034 | $ 64,326 | $ 58,148
Real Estate [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 330,862 | 211,977 |
Real Estate [Member] | Multi-Family Residential [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 15,570 |  |
Real Estate [Member] | Multi-Family Residential [Member] | Disposed of by Sale [Member] | Multifamily 327 Unit Minot Nd [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 11,562 |  |
Real Estate [Member] | Multi-Family Residential [Member] | Disposed of by Sale [Member] | Crown - Rochester, MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 3,318 |  |
Real Estate [Member] | Multi-Family Residential [Member] | Disposed of by Sale [Member] | Northern Valley - Rochester, MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 690 |  |
Real Estate [Member] | Multi-Family Residential [Member] | Disposed of by Sale [Member] | Pinecone Villas Sartell Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 2,732 |
Real Estate [Member] | Healthcare [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 202,990 |
Real Estate [Member] | Healthcare [Member] | Disposed of by Sale [Member] | Idaho Spring Creek Senior Housing Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 37,397 |
Real Estate [Member] | Healthcare [Member] | Disposed of by Sale [Member] | Five Edgewood Vista Senior Housing Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 50,393 |
Real Estate [Member] | Healthcare [Member] | Disposed of by Sale [Member] | Wyoming Senior Housing Portfolio [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 45,469 |
Real Estate [Member] | Healthcare [Member] | Disposed of by Sale [Member] | Nine Edgewood Vista Senior Housing Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 24,081 |
Real Estate [Member] | Healthcare [Member] | Disposed of by Sale [Member] | Four Edgewood Vista Senior Housing Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 14,511 |
Real Estate [Member] | Healthcare [Member] | Disposed of by Sale [Member] | Healtheast St John And Woodwinds Maplewood And Woodbury Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 13,777 |
Real Estate [Member] | Healthcare [Member] | Disposed of by Sale [Member] | Sartell 2000 23 Rd Street South Sartell Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 5,923 |
Real Estate [Member] | Healthcare [Member] | Disposed of by Sale [Member] | Legends At Heritage Place Sartell Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 11,439 |
Real Estate [Member] | Unimproved Land [Member] | Disposed of by Sale [Member] | Bismarck 4916 - Bismarck, ND [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 3,188 |  |
Real Estate [Member] | Unimproved Land [Member] | Disposed of by Sale [Member] | Grand Chute, Wisconsin, Unimproved Land [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 274 |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 312,104 | 5,981 |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Minot Southgate Retail - Minot, ND [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 3,332 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Lexington Commerce Center Eagan Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 3,963 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Eagan 1440 Duckwood Medical - Eagan, MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 1,886 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Edgewood Vista Hermantown Mn [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 24,697 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Urbandale - Urbandale IA [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 12,857 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Long Lake Road - Roseville MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 12,766 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Healthcare Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 232,778 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Garden View - St. Paul MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 6,191 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Ritchie Medical - St. Paul MN [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 10,419 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Bismarck 715 East Broadway - Bismarck, ND [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | $ 3,215 |  |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Stone Container Fargo Nd [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | 4,418 |
Real Estate [Member] | Other [Member] | Disposed of by Sale [Member] | Grand Forks Carmike Grand Forks Nd [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  |  | $ 1,563 |

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