Fair Value (Fair Value Measurement of Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Carrying Value
Financial assets:
Cash and cash equivalents	$ 104,867	$ 103,930
Federal Home Loan Bank stock	12,398	11,475
Net loans	1,453,418	1,214,935
Accrued interest receivable	6,019	4,403
Financial liabilities:
Deposits	1,470,608	1,135,428
Borrowings	211,787	212,225
Subordinated notes	44,447	44,440
Accrued interest payable	2,061	1,574
Estimate of Fair Value Measurement
Financial assets:
Cash and cash equivalents	104,867	103,930
Net loans	1,498,580	1,203,639
Accrued interest receivable	6,019	4,403
Financial liabilities:
Deposits	1,490,547	1,138,202
Borrowings	216,964	212,125
Subordinated notes	40,950	47,100
Accrued interest payable	2,061	1,574
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	22,775	19,990
Net loans	0	0
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Borrowings	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Financial assets:
Cash and cash equivalents	82,092	83,940
Net loans	0	0
Accrued interest receivable	2,027	1,236
Financial liabilities:
Deposits	1,490,547	1,138,202
Borrowings	216,964	212,125
Subordinated notes	40,950	47,100
Accrued interest payable	2,061	1,574
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	0	0
Net loans	1,498,580	1,203,639
Accrued interest receivable	3,992	3,167
Financial liabilities:
Deposits	0	0
Borrowings	0	0
Subordinated notes	0	0
Accrued interest payable	$ 0	$ 0