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Intangibles and Acquisition Related Accounting - Additional Information (Details) - USD ($) $ in Thousands | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 11,109 |  |  | $ 8,170
Scenario, Forecast [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Rolling Twelve Months |  |  | $ 76 |
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Two |  | $ 34 |  |
First Federal |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill | 2,000 |  |  |
Liberty Savings |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill | 804 |  |  |
First Personal |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 5,400 |  |  |
Finite-Lived Intangible Asset, Useful Life | 8 months |  |  |
First Personal | Fair Value Premium [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets | $ 133 |  |  |
First Personal | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets | 53 |  |  |
AJSB [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 2,900 |  |  |
Finite-Lived Intangible Asset, Useful Life | 14 years |  |  |
Amortization of Intangible Assets | $ 64 |  |  |
AJSB [Member] | Fair Value Premium [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets | 174 |  |  |
Core Deposits [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets | 460 |  |  |
Core Deposits [Member] | First Federal Acquisition [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Core Deposits, Gross | $ 93 |  |  |
Finite-Lived Intangible Asset, Useful Life | 7 years 10 months 24 days |  |  |
Core Deposits [Member] | First Federal |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets | $ 6 |  |  |
Core Deposits [Member] | Liberty Savings |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Core Deposits, Gross | $ 471 |  |  |
Finite-Lived Intangible Asset, Useful Life | 8 years 2 months 12 days |  |  |
Amortization of Intangible Assets | $ 29 |  |  |
Core Deposits [Member] | First Personal |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Core Deposits, Gross | $ 3,000 |  |  |
Finite-Lived Intangible Asset, Useful Life | 6 years 4 months 24 days |  |  |
Amortization of Intangible Assets | $ 238 |  |  |
Core Deposits [Member] | AJSB [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Core Deposits, Gross | $ 2,900 |  |  |
Finite-Lived Intangible Asset, Useful Life | 6 years 6 months |  |  |

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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=109223946&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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- Definition Bank deposits belonging to an acquired bank that can be counted on as a stable source of lending funds. These deposits have the following attributes: predictable costs and low sensitivity to interest rates. This intangible asset is usually amortized over its estimated useful life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the second rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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