Mortgage Notes Receivable - Schedule of carrying value of collateral dependent loans (Details) - USD ($) $ in Thousands		Dec. 31, 2022		Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		$ 923,442	[1]	$ 911,744	[2]
CECL Allowance		(41,492)	[1],[3],[4]	(10,394)	[2],[5],[6]
Financing Receivable, after Allowance for Credit Loss, Total		881,950	[1]	901,350	[2]
Allowances on excess amortized cost over fair value				700
Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		202,835		45,772
CECL Allowance		(36,666)		(1,834)
Financing Receivable, after Allowance for Credit Loss, Total		166,169		43,938
Senior Housing [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		16,595		61,236
Senior Housing [Member] | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value				25,337
CECL Allowance				(1,103)
Financing Receivable, after Allowance for Credit Loss, Total				24,234
Entitled Land [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		76,251		45,098
Entitled Land [Member] | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value				17,335
CECL Allowance				(42)
Financing Receivable, after Allowance for Credit Loss, Total				17,293
Single Family Housing [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		16,993
CECL Allowance		(950)
Financing Receivable, after Allowance for Credit Loss, Total		16,043
Single Family Housing [Member] | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value				1,730
CECL Allowance				(15)
Financing Receivable, after Allowance for Credit Loss, Total				1,715
Condos [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		71,975		64,492
Condos [Member] | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		42,237		1,109
CECL Allowance		(5,892)		(673)
Financing Receivable, after Allowance for Credit Loss, Total		36,345		436
Townhomes [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		106,888		93,300
Townhomes [Member] | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		18,296		261
CECL Allowance		(1,706)		(1)
Financing Receivable, after Allowance for Credit Loss, Total		16,590		260
Hotel | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		16,106
CECL Allowance		(9,151)
Financing Receivable, after Allowance for Credit Loss, Total		6,955
Offices [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		6,288
CECL Allowance	[7]	(5,042)
Financing Receivable, after Allowance for Credit Loss, Total		1,246
Offices [Member] | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		6,947
CECL Allowance		(978)
Financing Receivable, after Allowance for Credit Loss, Total		5,969
Residential Lots [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		104,100		111,644
Residential Lots [Member] | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		70,664
CECL Allowance		(11,519)
Financing Receivable, after Allowance for Credit Loss, Total		59,145
Commercial Other [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		11,411		9,080
Mixed Use [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		50,127		85,929
Mixed Use [Member] | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		3,318
CECL Allowance		(1,320)
Financing Receivable, after Allowance for Credit Loss, Total		1,998
Retail [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		9,071		$ 7,873
Retail [Member] | Loan portfolio [Member]
Loans and Leases Receivable Disclosure [Line Items]
Carrying Value		21,986
CECL Allowance		(108)
Financing Receivable, after Allowance for Credit Loss, Total		$ 21,878

[1] Represents LTV as of origination or latest amendment. LTVs above 65% generally represent loans in contractual default status where we have agreed to extend funds to the borrower above 65% in order to facilitate successful completion of the construction and return of capital.

[2] Represents LTV as of origination or latest amendment. LTVs above 65% generally represent loans in contractual default status where we have agreed to extend funds to the borrower above 65% in order to ensure successful completion of the construction and return of capital.

[3] Includes $35.0 million in loan specific allowances for loans deemed collateral dependent based on the excess amortized cost over the fair value of the underlying collateral. In addition, $1.5 million of the CECL allowance is excluded from this table because it relates to unfunded commitments and has been recorded as a liability under accounts payable and accrued liabilities in our consolidated balance sheet.

[4] Represents the year of either origination or amendment where the loan incurred a full re-underwriting in connection with the amendment.

[5] Includes $0.7 million in loan specific allowances for loans deemed collateral dependent based on the excess amortized cost over the fair value of the underlying collateral. In addition, $0.9 million of the CECL allowance is excluded from this table because it relates to unfunded commitments and has been recorded as a liability under accounts payable and accrued liabilities in our consolidated balance sheet.

[6] Includes $0.7 million in loan specific allowances for loans deemed collateral dependent based on the excess amortized cost over the fair value of the underlying collateral. In addition, $0.9 million of the CECL allowance is excluded from this table because it relates to unfunded commitments and has been recorded as a liability under accounts payable and accrued liabilities in our consolidated balance sheet.

[7] Includes $35.0 million in loan specific allowances for loans deemed collateral dependent based on the excess amortized cost over the fair value of the underlying collateral. In addition, $1.5 million of the CECL allowance is excluded from this table because it relates to unfunded commitments and has been recorded as a liability under accounts payable and accrued liabilities in our consolidated balance sheet.