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Goodwill, Other Intangible Assets, and Acquisition Related Accounting (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2016
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | $ 2,792 |  | $ 2,792
Pool Of Purchased Loans [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill, Purchase Accounting Adjustments | $ 178 |  |  |
Fixed Assets Valuations [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill, Purchase Accounting Adjustments | 109 |  |  |
Accrued WithDrawal Liability [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill, Purchase Accounting Adjustments | $ 162 |  |  |
First Federal Acquisition [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | 2,000 |  |
Amortization of Intangible Assets |  | 9 | $ 9 |
First Federal Acquisition [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion (Amortization) of Discounts and Premiums, Investments |  | 1,100 |  |
Accretion Expense |  | $ 112 | 146 |
First Federal Acquisition [Member] | Loans Receivable [Member] | Home Equity Line of Credit [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Amortization Of Discounts And Premiums Term |  | 55 months |  |
First Federal Acquisition [Member] | During 2017 [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets |  | $ 3 |  |
First Federal Acquisition [Member] | During 2017 [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion (Amortization) of Discounts and Premiums, Investments |  | 46 |  |
First Federal Acquisition [Member] | During 2018 [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Expense |  | 151 |  |
First Federal Acquisition [Member] | Through 2022 [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year |  | 48 |  |
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 |  |
Liberty Savings [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | $ 804 |  |
Amortization of Intangible Assets |  | 43 | 43 |
Liberty Savings [Member] | Certificates of Deposit [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion (Amortization) of Discounts and Premiums, Investments |  | $ 124 |  |
Accretion Amortization Of Discounts And Premiums Term |  | 17 months |  |
Amortization Expense |  | $ 0 | 66 |
Liberty Savings [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion (Amortization) of Discounts and Premiums, Investments |  | $ 1,200 |  |
Accretion Amortization Of Discounts And Premiums Term |  | 44 months |  |
Accretion Expense |  | $ 239 | $ 274 |
Liberty Savings [Member] | During 2017 [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Expense |  | 67 |  |
Liberty Savings [Member] | During 2018 [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Expense |  | 266 |  |
Liberty Savings [Member] | During 2019 [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Expense |  | 44 |  |
Liberty Savings [Member] | First Federal Acquisition [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | 2,800 |  |
Liberty Savings [Member] | Core Deposits [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Core Deposits, Gross |  | $ 471 |  |
Finite-Lived Intangible Asset, Useful Life |  | 8 years 2 months 12 days |  |
Liberty Savings [Member] | Core Deposits [Member] | During 2017 [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets |  | $ 14 |  |
Liberty Savings [Member] | Core Deposits [Member] | Through Third Quarter 2023 [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets |  | $ 327 |  |

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- Definition The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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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://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 + 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://www.xbrl.org/2003/role/presentationRef -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 remainder of the fiscal year following the latest fiscal year. Excludes 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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