Leases - Maturities of Lease Liabilities (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Operating Leases
January 2021 - December 2021	$ 1,386,000
January 2022 - December 2022	1,184,000
January 2023 - December 2023	1,172,000
January 2024 - December 2024	1,178,000
January 2025 - December 2025	879,000
Thereafter	1,122,000
Total payments under lease agreements	6,921,000
Less imputed interest	(913,000)
Total lease liabilities	6,008,000	$ 7,140,000
Finance Leases
January 2021 - December 2021	57,000
January 2022 - December 2022	38,000
January 2023 - December 2023	8,000
Total payments under lease agreements	103,000
Less imputed interest	(5,000)
Total lease liabilities	$ 98,000	$ 2,412,000