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Commitments - Summary of Financial Instrument Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fixed Letters of Credit [Member]
Financial instrument commitments
Financial instrument commitments	$ 910	$ 859
Fixed Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member]
Financial instrument commitments
Financial instrument commitments	910	859
Fixed Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Financial Standby Letter of Credit [Member]
Financial instrument commitments
Financial instrument commitments	339	327
Fixed Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Performance Guarantee [Member]
Financial instrument commitments
Financial instrument commitments	571	532
Fixed Letters of Credit [Member] | Unused lines of Credit [Member]
Financial instrument commitments
Loan commitments	111,348	89,303
Variable Letters of Credit [Member]
Financial instrument commitments
Financial instrument commitments	15,891	14,003
Variable Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member]
Financial instrument commitments
Financial instrument commitments	15,824	13,936
Variable Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Financial Standby Letter of Credit [Member]
Financial instrument commitments
Financial instrument commitments	9,612	7,158
Variable Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Standby Letters of Credit [Member]
Financial instrument commitments
Financial instrument commitments		397
Variable Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Performance Guarantee [Member]
Financial instrument commitments
Financial instrument commitments	6,212	6,381
Variable Letters of Credit [Member] | Commitments to Extend Credit Nonborrowers [Member] | Performance Guarantee [Member]
Financial instrument commitments
Financial instrument commitments	67	67
Variable Letters of Credit [Member] | Unused lines of Credit [Member]
Financial instrument commitments
Loan commitments	320,120	297,785
Letter of Credit [Member]
Financial instrument commitments
Financial instrument commitments	16,801	14,862
Letter of Credit [Member] | Commitments to Extend Credit to Borrowers [Member]
Financial instrument commitments
Financial instrument commitments	16,734	14,795
Letter of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Financial Standby Letter of Credit [Member]
Financial instrument commitments
Financial instrument commitments	9,951	7,485
Letter of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Standby Letters of Credit [Member]
Financial instrument commitments
Financial instrument commitments		397
Letter of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Performance Guarantee [Member]
Financial instrument commitments
Financial instrument commitments	6,783	6,913
Letter of Credit [Member] | Commitments to Extend Credit Nonborrowers [Member] | Performance Guarantee [Member]
Financial instrument commitments
Financial instrument commitments	67	67
Letter of Credit [Member] | Unused lines of Credit [Member]
Financial instrument commitments
Loan commitments	$ 431,468	$ 387,088

X

- Definition

The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

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X

- Definition

The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

No definition available.

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- Definition

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+ References

No definition available.

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