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Fair Value of Assets and Liabilities - Financial Assets Measured at Fair Value on Non-Recurring Basis (Details) - Nonrecurring $ in Thousands	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Fair value assets and liabilities - Nonrecurring Basis
Total assets measured at fair value	$ 72	$ 370
Impaired loans, net
Fair value assets and liabilities - Nonrecurring Basis
Total assets measured at fair value		102
Other real estate owned, net
Fair value assets and liabilities - Nonrecurring Basis
Total assets measured at fair value	72	268
Level 3
Fair value assets and liabilities - Nonrecurring Basis
Total assets measured at fair value	72	370
Level 3 | Impaired loans, net
Fair value assets and liabilities - Nonrecurring Basis
Total assets measured at fair value		$ 102
Impaired loans, input		0.30
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Level 3 | Impaired loans, net | Weighted Average
Fair value assets and liabilities - Nonrecurring Basis
Impaired loans, input		0.30
Level 3 | Other real estate owned, net
Fair value assets and liabilities - Nonrecurring Basis
Total assets measured at fair value	$ 72	$ 268
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Level 3 | Other real estate owned, net | Minimum
Fair value assets and liabilities - Nonrecurring Basis
Other real estate owned, input	0.75	0.33
Level 3 | Other real estate owned, net | Maximum
Fair value assets and liabilities - Nonrecurring Basis
Other real estate owned, input	0.80	0.75
Level 3 | Other real estate owned, net | Weighted Average
Fair value assets and liabilities - Nonrecurring Basis
Other real estate owned, input	0.79	0.37

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Value of input used to measure loan, held for sale.

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