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Loans and Allowance - Allowance for Loan Losses (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | $ 2,066,000 | $ 2,541,000 | $ 2,541,000
Charged off | (125,000) | (205,000) | (616,000)
Recoveries | 57,000 |  | 256,000
Provision for loan losses | (80,000) | 173,000 | (115,000)
Balance, end of year | 1,918,000 |  | 2,066,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance | 11,000 |  | 15,000
Individually evaluated for impairment, Related loan balance | 4,330,000 |  | 4,397,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 1,907,000 |  | 2,051,000
Collectively evaluated for impairment, Related loan balance | 272,630,000 |  | 280,341,000
Consumer |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 122,000 | 161,000 | 161,000
Charged off |  |  | (69,000)
Recoveries | 4,000 |  | 16,000
Provision for loan losses | (4,000) |  | 14,000
Balance, end of year | 122,000 |  | 122,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance | 11,000 |  | 15,000
Individually evaluated for impairment, Related loan balance | 86,000 |  | 86,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 111,000 |  | 107,000
Collectively evaluated for impairment, Related loan balance | 12,614,000 |  | 11,990,000
Residential Real estate |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 589,000 | 864,000 | 864,000
Charged off |  |  | (16,000)
Recoveries | 3,000 |  | 5,000
Provision for loan losses | (45,000) |  | (264,000)
Balance, end of year | 547,000 |  | 589,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Related loan balance | 617,000 |  | 631,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 547,000 |  | 589,000
Collectively evaluated for impairment, Related loan balance | 80,165,000 |  | 80,402,000
Indirect |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 917,000 | 988,000 | 988,000
Charged off | (125,000) |  | (504,000)
Recoveries | 30,000 |  | 225,000
Provision for loan losses | 20,000 |  | 208,000
Balance, end of year | 842,000 |  | 917,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 842,000 |  | 917,000
Collectively evaluated for impairment, Related loan balance | 95,093,000 |  | 102,384,000
Commercial |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 38,000 | 241,000 | 241,000
Charged off |  |  | (27,000)
Recoveries | 20,000 |  | 10,000
Provision for loan losses | (21,000) |  | (186,000)
Balance, end of year | 37,000 |  | 38,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 37,000 |  | 38,000
Collectively evaluated for impairment, Related loan balance | 13,172,000 |  | 11,907,000
Construction |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 11,000 | 4,000 | 4,000
Provision for loan losses | (2,000) |  | 7,000
Balance, end of year | 9,000 |  | 11,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 9,000 |  | 11,000
Collectively evaluated for impairment, Related loan balance | 2,563,000 |  | 3,317,000
Commercial Real Estate |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance, beginning of year | 389,000 | $ 283,000 | 283,000
Provision for loan losses | (28,000) |  | 106,000
Balance, end of year | 361,000 |  | 389,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Related loan balance | 3,627,000 |  | 3,680,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 361,000 |  | 389,000
Collectively evaluated for impairment, Related loan balance | $ 69,023,000 |  | $ 70,341,000

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