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Investment in Unconsolidated Joint Ventures - Investment (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2021 USD ($) item property	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) property item
Investment in Unconsolidated Joint Ventures
Carrying Value	$ 19,340,000		$ 11,340,000
Income Recognized	289,000	$ 231,000
Cash Interest Received	$ 164,000	231,000
Joint Venture
Investment in Unconsolidated Joint Ventures
Number of properties owned by joint venture for sale \| property			4
Liquidation proceeds			$ 17,848,000
Amount of gains (losses) on liquidation			$ 758,000
Joint Venture \| Preferred Equity Investment \| Arizona
Investment in Unconsolidated Joint Ventures
Number of properties owned by joint venture \| property	4
Joint Venture \| Not primary beneficiary
Investment in Unconsolidated Joint Ventures
Capital Contributions	$ 8,000,000	58,000
Income Recognized	289,000	231,000
Cash Interest Received	164,000	231,000
Preferred Equity Investment \| Joint Venture \| Not primary beneficiary
Investment in Unconsolidated Joint Ventures
Carrying Value	19,340,000
Combination ALF, MC, ILF \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary
Investment in Unconsolidated Joint Ventures
Capital Contributions		58,000
Income Recognized		231,000
Cash Interest Received		$ 231,000
Combination ALF/MC \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary
Investment in Unconsolidated Joint Ventures
Number of beds/units \| item			95
Capital Contributions			$ 6,340,000
Income Recognized	112,000
Cash Interest Received	$ 75,000
Combination ALF/MC \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington
Investment in Unconsolidated Joint Ventures
Preferred return percentage	12.00%
Contractual cash portion	7.00%
Number of beds/units \| item	95
Carrying Value	$ 6,340,000
Reserve withheld	$ 1,425,000
Percentage of Investment	15.50%
Combination ALF/MC \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington \| Internal Rate of Return is Until Eight Percent
Investment in Unconsolidated Joint Ventures
Percentage of cash return	8.00%
Combination ALF/MC \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington \| Internal Rate of Return is Until Eight Percent \| Minimum
Investment in Unconsolidated Joint Ventures
Percentage of cash return	7.00%
Combination ALF/MC \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington \| Internal Rate of Return is Until Eight Percent \| Maximum
Investment in Unconsolidated Joint Ventures
Percentage of cash return	9.00%
Combination ALF/MC \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington \| The Internal Rate of Return is Between Twelve and Fourteen Percent \| Minimum
Investment in Unconsolidated Joint Ventures
Percentage of cash return	12.00%
Combination ALF/MC \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington \| The Internal Rate of Return is Between Twelve and Fourteen Percent \| Maximum
Investment in Unconsolidated Joint Ventures
Percentage of cash return	14.00%
Combination ILF/ALF \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary
Investment in Unconsolidated Joint Ventures
Capital Contributions	$ 8,000,000
Income Recognized	177,000
Cash Interest Received	$ 89,000
Combination ILF/ALF \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington
Investment in Unconsolidated Joint Ventures
Preferred return percentage	12.00%
Contractual cash portion	8.00%
Number of beds/units \| item	267
Investment commitment	$ 13,000,000
Carrying Value	13,000,000
Reserve withheld	$ 3,777,000
Percentage of Investment	11.60%
Additional preferred capital contributions in joint venture committed	$ 8,000,000
Amount of joint venture investment	$ 13,000,000
Combination ILF/ALF \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington \| Internal Rate of Return is Until Eight Percent
Investment in Unconsolidated Joint Ventures
Percentage of cash return	8.00%
Combination ILF/ALF \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington \| The Internal Rate of Return is Between Twelve and Fourteen Percent \| Minimum
Investment in Unconsolidated Joint Ventures
Percentage of Investment	12.00%
Combination ILF/ALF \| Preferred Equity Investment \| Joint Venture \| Not primary beneficiary \| Washington \| The Internal Rate of Return is Between Twelve and Fourteen Percent \| Maximum
Investment in Unconsolidated Joint Ventures
Percentage of Investment	14.00%