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Combined Guarantor Subsidiaries - Leases - Maturities of Operating Lease Payments (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Condensed Financial Statements Captions [Line Items]    
2020 $ 558,000  
2021 594,000  
2022 329,000  
2023 284,000  
2024 263,000  
Total undiscounted lease payments 14,047,000  
Less imputed interest (10,210,000)  
Lease Liability 3,837,000 $ 4,074,000
2019   504,000
2020   610,000
2021   517,000
2022   321,000
2023   281,000
Thereafter   12,297,000
Future minimum payments due under operating leases   14,530,000
Guarantor Subsidiaries    
Condensed Financial Statements Captions [Line Items]    
2020 41,000  
2021 41,000  
2022 41,000  
2023 41,000  
2024 41,000  
Thereafter 1,951,000  
Total undiscounted lease payments 2,156,000  
Less imputed interest (1,667,000)  
Lease Liability $ 489,000 490,000
2019   41,000
2020   41,000
2021   41,000
2022   41,000
2023   41,000
Thereafter   1,990,000
Future minimum payments due under operating leases   $ 2,195,000