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Acquisition of MidCoast Community Bancorp, Inc, Estimated Future Amortization Expense (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Estimated Future Amortization Expense [Abstract]
Amortization expense		$ 104,000	$ 112,000	$ 202,000	$ 226,000
Remaining 2020		210,000		210,000
2021		357,000		357,000
2022		284,000		284,000
2023		218,000		218,000
2024		156,000		156,000
Thereafter		196,000		196,000
Net carrying value	[1]	1,421,000		1,421,000		$ 1,346,000
Merger and acquisition expenses		1,803,000	0	2,179,000	0
MidCoast Community Bancorp, Inc [Member]
Estimated Future Amortization Expense [Abstract]
Merger and acquisition expenses		1,790,000
Core Deposit Intangibles [Member]
Estimated Future Amortization Expense [Abstract]
Amortization expense		55,000	$ 58,000	105,000	$ 116,000
Remaining 2020		112,000		112,000
2021		192,000		192,000
2022		156,000		156,000
2023		121,000		121,000
2024		85,000		85,000
Thereafter		91,000		91,000
Net carrying value	[1]	757,000		757,000		$ 705,000
Core Deposit Intangibles [Member] | MidCoast Community Bancorp, Inc [Member]
Estimated Future Amortization Expense [Abstract]
Amortization expense		5,000		5,000
Remaining 2020		14,000		14,000
2021		27,000		27,000
2022		24,000		24,000
2023		21,000		21,000
2024		18,000		18,000
Thereafter		48,000		48,000
Net carrying value		$ 152,000		$ 152,000
[1] Excludes fully amortized intangible assets

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Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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