Organization and Summary of Significant Accounting Policies (Narrative) (Details)	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) Tenant	Mar. 31, 2022	Jun. 30, 2021 USD ($) Tenant	Jun. 30, 2022 USD ($) Tenant	Jun. 30, 2021 USD ($) Tenant	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	May 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Accounting Policies [Line Items]
Interest costs capitalized	$ 176,000		$ 64,000	$ 274,000	$ 127,000
Total Properties	5.30%		6.00%	5.30%	6.00%
Total gross leasable area	6.90%		7.70%	6.90%	7.70%
Percentage of tenants for which revenue recognized on cash basis | Tenant	8		11	8	11
Lessor Lease, Rent Deferral Lease Amendments Due To Covid-19, Deferred Rent Originally Due Current Fiscal Year							$ 4,758,000,000		$ 52,019,000,000
Lessor Lease, Rent Deferral Lease Amendments Due To Covid-19, Deferred Rent Repaid				$ 8,076,000			31,776,000,000
Revenue recognized on cash basis	$ 15,499,000		$ 13,055,000	31,285,000	$ 24,369,000
Revolving credit facility borrowing capacity	1,060,000,000,000		$ 1,100,000,000,000	1,060,000,000,000	$ 1,100,000,000,000			$ 900,000,000,000
Debt costs	$ 10,144,000			$ 10,144,000
Rent repaid						$ 6,450,000
Number of tenants | Tenant	3			3
Mortgage loan
Accounting Policies [Line Items]
Mortgage receivable	$ 1,734,000			$ 1,734,000			2,023,000
Allowance for credit loss	111,000			$ 111,000			129,000
Collectability analysis, period used		15 years
Minimum
Accounting Policies [Line Items]
Initial lease term				10 years
Maximum
Accounting Policies [Line Items]
Initial lease term				20 years
Line of Credit
Accounting Policies [Line Items]
Revolving credit facility borrowing capacity	1,100,000,000			$ 1,100,000,000
Loans Payable
Accounting Policies [Line Items]
Debt costs	38,145,000			38,145,000			38,145,000
Debt costs accumulated amortization	$ 10,465,000			$ 10,465,000			$ 9,262,000