Redeemable Noncontrolling Interests (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Changes in the carrying amount of redeemable noncontrolling interest [Roll Forward]
Beginning balance	$ 1,462,000	$ 1,371,000	$ 1,371,000
Proceeds from redeemable noncontrolling interest	1,118,000	151,000
Payments to Redeemable Noncontrolling Interest	(25,000)	0
Fair value adjustment to redeemable noncontrolling interests	108,000	25,000
Net Loss Attributable to Redeemable Noncontrolling Interests	(83,000)	(25,000)
Ending balance	$ 2,580,000	$ 1,522,000	$ 1,462,000
Meridian
Redeemable Noncontrolling Interests [Line Items]
Ownership percentage	98.00%
Avalon
Redeemable Noncontrolling Interests [Line Items]
Ownership percentage	90.00%
Limited Partner
Redeemable Noncontrolling Interests [Line Items]
Stock issued during period, stock splits	208		208
General Partnership
Redeemable Noncontrolling Interests [Line Items]
Noncontrolling interest, ownership percentage by parent	99.99%		99.99%
Limited Partnership
Redeemable Noncontrolling Interests [Line Items]
Noncontrolling limited partnership interest in operating partnership	0.01%		0.01%

Adjustments to Additional Paid in Capital, Fair Value Adjustment to Redeemable Noncontrolling Interests

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Ownership Percentage, Properties

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Amount of cash inflow from redeemable noncontrolling interest.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

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The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of shares issued during the period as a result of a stock split.

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