Discontinued Operations - Summarized Results of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
OPERATING EXPENSES:
Income from discontinued operations, net of tax	$ 0	$ 3,126	$ 0	$ 7,191
Discontinued Operations [Member]
REVENUES:
Rental and other property revenues		37,165		75,674
OPERATING EXPENSES:
Property operating expenses		13,415		26,736
Depreciation and amortization		18,740		37,770
Other expenses, net		127		(325)
Total operating expenses		32,282		64,831
Interest income		540		1,074
Interest expense		(4,563)		(9,093)
Income from unconsolidated real estate partnerships		170		352
Income before income tax benefit		1,030		3,176
Income tax benefit		2,096		(4,015)
Income from discontinued operations, net of tax		3,126		7,191
Net loss attributable to noncontrolling interests in consolidated real estate partnerships		116		(219)
Net income from discontinued operations attributable to Spinnee		$ 3,242		$ 7,410