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Leases - Other (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Leases
Operating right-of-use assets	$ 1,900,000		$ 1,900,000
Operating lease liabilities	$ 1,910,000		$ 1,910,000		$ 2,137,000
Weighted-average remaining lease term (in years)	6 years 8 months 12 days		6 years 8 months 12 days
Weighted-average discount rate (as a percent)	4.00%		4.00%
Operating lease cost	$ 93,000	$ 86,000	$ 289,000	$ 252,000
Short-term operating lease expense	$ 24,000	$ 15,000	$ 56,000	$ 75,000
Minimum
Leases
Remaining lease terms (in years)	1 year		1 year
Maximum
Leases
Remaining lease terms (in years)	10 years		10 years

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No definition available.

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- Definition

Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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