Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions - Effect of Fair Value (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income	$ 2,400,000	$ 2,700,000
Amount of Gain or (Loss) Recognized in Income on Derivative	$ 56,000	$ 57,000

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CC
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959

Name:	us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration