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ACQUISITION OF MIDCOAST COMMUNITY BANCORP, INC, Estimated Future Amortization Expense (Details) - USD ($) | 8 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Estimated Future Amortization Expense [Abstract] |  |  |  |  |
Amortization expense |  |  | $ 395,000 |  |
2021 |  | $ 457,000 | 457,000 |  |
2022 |  | 368,000 | 368,000 |  |
2023 |  | 287,000 | 287,000 |  |
2024 |  | 214,000 | 214,000 |  |
2025 |  | 144,000 | 144,000 |  |
Net carrying value | [1] | 1,668,000 | 1,668,000 | $ 1,346,000 |
Merger and acquisition expenses |  |  | 2,179,000 | 466,000 | $ 0
MidCoast Community Bancorp, Inc [Member] |  |  |  |  |
Estimated Future Amortization Expense [Abstract] |  |  |  |  |
Merger and acquisition expenses |  |  | 2,179,000 | 466,000 |
Core Deposit Intangibles [Member] |  |  |  |  |
Estimated Future Amortization Expense [Abstract] |  |  |  |  |
Amortization expense |  |  | 216,000 |  |
2021 |  | 192,000 | 192,000 |  |
2022 |  | 156,000 | 156,000 |  |
2023 |  | 121,000 | 121,000 |  |
2024 |  | 86,000 | 86,000 |  |
2025 |  | 50,000 | 50,000 |  |
Net carrying value | [1] | 646,000 | 646,000 | $ 705,000 |
Core Deposit Intangibles [Member] | MidCoast Community Bancorp, Inc [Member] |  |  |  |  |
Estimated Future Amortization Expense [Abstract] |  |  |  |  |
Amortization expense |  | 19,000 |  |  |
2021 |  | 27,000 | 27,000 |  |
2022 |  | 24,000 | 24,000 |  |
2023 |  | 21,000 | 21,000 |  |
2024 |  | 18,000 | 18,000 |  |
2025 |  | 15,000 | 15,000 |  |
Thereafter |  | 33,000 | 33,000 |  |
Net carrying value |  | $ 138,000 | $ 138,000 |  |
[1] | Excludes fully amortized intangible assets

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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