Investments - Schedule of Loans Receivable (Details) $ in Thousands	Dec. 31, 2022 USD ($) property	Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal balance outstanding	$ 238,695	$ 187,793
Mortgage Receivables 8.00% Due 2039
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	2
Effective Interest Rate	8.80%
Stated Interest Rate	8.00%
Principal balance outstanding	$ 12,000	12,000
Mortgage Receivables 8.10% Due 2059
Accounts, Notes, Loans and Financing Receivable [Line Items]
Effective Interest Rate	8.10%
Stated Interest Rate	8.10%
Principal balance outstanding	$ 0	6,096
Mortgage Receivables 7.75% Due 2039
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	2
Effective Interest Rate	8.53%
Stated Interest Rate	7.75%
Principal balance outstanding	$ 7,300	7,300
Mortgage Receivables 7.70% Due 2034
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	69
Effective Interest Rate	8.16%
Stated Interest Rate	7.70%
Principal balance outstanding	$ 51,000	28,000
Mortgage Receivables 7.65% Due 2040
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	8.42%
Stated Interest Rate	7.65%
Principal balance outstanding	$ 5,300	5,300
Mortgage Receivables 8.50% Due 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	3
Effective Interest Rate	8.79%
Stated Interest Rate	8.50%
Principal balance outstanding	$ 2,324	2,324
Mortgage Receivables 7.00% Due 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	7.00%
Stated Interest Rate	7.00%
Principal balance outstanding	$ 600	600
Mortgage Receivables 6.75% Due 2026
Accounts, Notes, Loans and Financing Receivable [Line Items]
Effective Interest Rate	6.89%
Stated Interest Rate	6.75%
Principal balance outstanding	$ 0	14,165
Mortgage Receivables 8.25% Due 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	3
Effective Interest Rate	8.30%
Stated Interest Rate	8.25%
Principal balance outstanding	$ 3,146	3,146
Mortgage Receivables 6.40% Due 2036
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	2
Effective Interest Rate	6.87%
Stated Interest Rate	6.40%
Principal balance outstanding	$ 2,520	2,520
Mortgage Receivables 7.00% Due 2036
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	3
Effective Interest Rate	7.51%
Stated Interest Rate	7.00%
Principal balance outstanding	$ 2,673	30,806
Mortgage Receivables 7.00% Due 2036
Accounts, Notes, Loans and Financing Receivable [Line Items]
Effective Interest Rate	7.51%
Stated Interest Rate	7.00%
Principal balance outstanding	$ 0	9,679
Mortgage Receivables 7.50% Due 2031
Accounts, Notes, Loans and Financing Receivable [Line Items]
Effective Interest Rate	7.85%
Stated Interest Rate	7.50%
Principal balance outstanding	$ 0	13,000
Mortgage Receivables 8.25% Due 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	2
Effective Interest Rate	8.29%
Stated Interest Rate	8.25%
Principal balance outstanding	$ 2,389	2,389
Mortgage Receivables 8.00% Due 2051
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	5.72%
Stated Interest Rate	8.00%
Principal balance outstanding	$ 24,100	6,864
Mortgage Receivables 7.10% Due 2036
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	2
Effective Interest Rate	7.44%
Stated Interest Rate	7.10%
Principal balance outstanding	$ 9,808	9,808
Mortgage Receivables 6.80% Due 2036
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	7
Effective Interest Rate	7.30%
Stated Interest Rate	6.80%
Principal balance outstanding	$ 35,474	25,714
Mortgage Receivables 7.20% Due 2036
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	7.73%
Stated Interest Rate	7.20%
Principal balance outstanding	$ 2,470	2,470
Mortgage Receivables 8.00% Due 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	8.00%
Stated Interest Rate	8.00%
Principal balance outstanding	$ 1,754	0
Mortgage Receivables 7.00% Due 2027
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	37
Effective Interest Rate	6.80%
Stated Interest Rate	7.00%
Principal balance outstanding	$ 26,307	0
Mortgage Receivables 7.20% Due 2037
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	6.99%
Stated Interest Rate	7.20%
Principal balance outstanding	$ 3,600	0
Mortgage Receivables 8.25% Due 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	8.40%
Stated Interest Rate	8.25%
Principal balance outstanding	$ 760	0
Mortgage Receivables 8.05% Due 2037
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	4
Effective Interest Rate	8.64%
Stated Interest Rate	8.05%
Principal balance outstanding	$ 12,250	0
Mortgage Receivables 8.25% Due 2037
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	10
Effective Interest Rate	8.93%
Stated Interest Rate	8.25%
Principal balance outstanding	$ 28,938	0
Leasehold Interest 10.69% Due 2039
Accounts, Notes, Loans and Financing Receivable [Line Items]
Effective Interest Rate	10.69%
Principal balance outstanding	$ 0	1,435
Leasehold Interest 2.25% Due 2034
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	2.25%
Principal balance outstanding	$ 992	1,055
Leasehold Interest 2.41% Due 2034
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	2.41%
Principal balance outstanding	$ 1,473	1,560
Leasehold Interest 4.97% Due 2038
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Secured Properties | property	1
Effective Interest Rate	4.97%
Principal balance outstanding	$ 1,517	$ 1,562