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LEASES - As Lessor - Straight-Line Rent (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Unbilled Straight-Line Rent      
Unbilled rent receivable $ 16,988,000 $ 16,661,000  
Period during which amount of unbilled rent receivable is to be billed and received 17 years 17 years  
Unbilled straight-line rent receivables written off related to property sold $ 1,045,000 $ 1,048,000 $ 519,000
Unearned rental income $ 416,000 $ 579,000  
Period during which amount of unbilled rent payable is to be billed and received 17 years 17 years  
Unbilled rent receivable written off during the period due to the sale of property $ 0 $ 43,000 $ 0
Unbilled rent straight-line rent receivable written off related to tenant bankruptcy $ 50,000 $ 133,000