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SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Nov. 30, 2019 USD ($) home	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Apr. 30, 2020	Jan. 01, 2020 USD ($)	Dec. 31, 2019 USD ($)
Accounting policies
Recognition of operating lease right-of-use assets		$ 203,410				$ 204,225
Recognition of operating lease liabilities		197,829				198,558
Allocation of other comprehensive income/(loss)		(138)
Significant Accounting Policies
Development costs excluding direct costs and capitalized interest		6,900	$ 3,300
Interest capitalized during period		1,400	1,100
Notes receivable		152,300				153,650
Allowance for credit losses		(757)
Notes receivable, net		151,543				153,650
Interest Income, Related Party		0	0
Note receivable interest income		2,600	1,100
Current Income Tax Expense (Benefit)		0
Deferred tax liabilities, net		(1,400)
Unrecognized tax benefit, accrued interest or penalties due to examination		0
Bellevue, WA 259 Home Community
Significant Accounting Policies
Number of apartment homes | home	259
Note due April 2020
Significant Accounting Policies
Notes receivable		$ 20,000				20,000
Note receivable interest rate		12.00%		8.00%
Note due October 2020
Significant Accounting Policies
Notes receivable						2,250
Note receivable interest rate		8.00%
Note due October 2022
Significant Accounting Policies
Notes receivable		$ 115,000				115,000
Note receivable interest rate		4.75%
Note due October 2022 | Bellevue, WA 259 Home Community
Significant Accounting Policies
Aggregate commitment on note receivable	$ 115,000
Deposit made under purchase option agreement	10,000
Payment to acquire real estate	$ 170,000
Purchase option exercisable term	30 days
Maturity date extension term	10 years
Loan interest term	3 years
Amortization schedule term	30 years
Note due January 2023
Significant Accounting Policies
Notes receivable		$ 17,300				16,400
Notes receivable, net		$ 17,300
Note receivable interest rate		10.00%
Aggregate commitment on note receivable		$ 20,000
Additional amount loaned		900
Note maturity public capital threshold		5,000
Maximum
Significant Accounting Policies
Deferred tax liabilities, net						$ (1,600)
ASU 2016-13
Accounting policies
Retained earnings					$ 2,200
Noncontrolling Interests
Accounting policies
Allocation of other comprehensive income/(loss)		$ (100)	$ (300)

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