Mortgage Notes Receivable - Information pertaining to mortgage notes receivable (Details) - USD ($) $ in Thousands		Jun. 30, 2022		Mar. 31, 2022		Dec. 31, 2021		Jun. 30, 2021	Mar. 31, 2021		Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Total principal outstanding for our mortgage notes receivable		$ 966,752				$ 911,744
Adoption of ASU 2016-13		9,526	[1]	$ 8,647		10,394	[2]	$ 10,943	$ 10,663		$ 10,590
Mortgage notes receivable, net		957,226				901,350
Mortgage notes receivables
Loans and Leases Receivable Disclosure [Line Items]
Total loan commitments		1,600,686				1,489,055
Construction holdbacks		578,492				524,462
Interest reserves		43,648				39,880
Total principal outstanding for our mortgage notes receivable		978,546				924,713
Adoption of ASU 2016-13	[3]	9,526				10,394
Deferred origination and amendment fees		11,794				12,969
Mortgage notes receivable, net		957,226				901,350
Unfunded Loan Commitment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Adoption of ASU 2016-13		1,410		1,097	[4]	904	[4]	725	947	[4]	0	[4]
Unfunded Loan Commitment [Member] | Accounts payable and accrued liabilities
Loans and Leases Receivable Disclosure [Line Items]
Adoption of ASU 2016-13		1,400
Funded And Unfunded Loan Commitment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Adoption of ASU 2016-13		$ 10,936		$ 9,744		$ 11,298		$ 11,668	$ 11,610		$ 10,590

[1] Includes $1.0 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, $1.4 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 condensed consolidated balance sheet.

[2] 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.

[3] As of June 30, 2022, $1.4 million of the 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 condensed consolidated balance sheet.

[4] CECL allowance related to unfunded commitments is presented as a liability under accounts payable and accrued liabilities in our condensed consolidated balance sheet.