Fair Value of Financial Instruments, Assets, Balance Sheet Grouping (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Assets [Abstract]
AFS Securities	$ 18,842		$ 12,906
HTM securities	23,457		26,158
Liabilities [Abstract]
Assets or liabilities transferred between levels 1, 2 and 3	0	$ 0	0
Carrying Value [Member]
Assets [Abstract]
Cash and cash equivalents	115,636		88,193
Certificates of deposit held as investment	7,540		7,540
AFS Securities	18,842		12,906
HTM securities	22,737		25,960
LHFS	21,996		10,910
Loans receivable, net	628,032		638,547
Restricted stock investments	2,299		2,431
Accrued interest receivable	2,275		2,458
MSRs	240		323
IRLCs	344		179
Best effort forward contracts	835		23
Mandatory forward contracts	584		23
Liabilities [Abstract]
Deposits	690,212		661,049
Accrued interest payable	308		317
Borrowings	35,000		35,000
Subordinated debentures	20,619		20,619
Interest-rate lock commitments ("IRLCs")	405
Best effort forward contracts	18
Total [Member]
Assets [Abstract]
Cash and cash equivalents	115,636		88,193
Certificates of deposit held as investment	7,540		7,540
AFS Securities	18,842		12,906
HTM securities	23,457		26,158
LHFS	21,996		10,910
Loans receivable, net	616,259		647,238
Restricted stock investments	2,299		2,431
Accrued interest receivable	2,275		2,458
MSRs	240		323
IRLCs	344		179
Best effort forward contracts	835		23
Mandatory forward contracts	584		23
Liabilities [Abstract]
Deposits	694,660		662,418
Accrued interest payable	308		317
Borrowings	35,495		35,063
Subordinated debentures	18,846		16,754
Interest-rate lock commitments ("IRLCs")	405
Best effort forward contracts	18
Level 1 [Member]
Assets [Abstract]
Cash and cash equivalents	115,636		88,193
Certificates of deposit held as investment	7,540		7,540
HTM securities	1,015		1,008
Level 2 [Member]
Assets [Abstract]
AFS Securities	18,842		12,906
HTM securities	22,442		25,150
LHFS	21,996		10,910
Restricted stock investments	2,299		2,431
Accrued interest receivable	2,275		2,458
Best effort forward contracts	835		23
Mandatory forward contracts	584		23
Liabilities [Abstract]
Deposits	694,660		662,418
Accrued interest payable	308		317
Borrowings	35,495		35,063
Best effort forward contracts	18
Level 3 [Member]
Assets [Abstract]
Loans receivable, net	616,259		647,238
MSRs	240		323
IRLCs	344		179
Liabilities [Abstract]
Subordinated debentures	18,846		$ 16,754
Interest-rate lock commitments ("IRLCs")	$ 405