Fair Value of Financial Instruments, Assets, Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets [Abstract]
AFS Securities - U.S. government agency notes	$ 10,119	$ 0
HTM securities	54,004	62,827
Bank Commitments [Member]
Liabilities [Abstract]
Loan funding commitments	105,200	58,200
Standby Letters of Credit [Member]
Liabilities [Abstract]
Loan funding commitments	3,500	4,000
Level 1 [Member]
Assets [Abstract]
Cash and cash equivalents	21,853	67,014
Certificates of deposit held as investment	8,780	100
AFS Securities - U.S. government agency notes	0
HTM securities	5,056	13,165
LHFS	0	0
Loans receivable	0	0
Restricted stock investments	0	0
Accrued interest receivable	0	0
MSRs	0	0
IRLCs	0	0
Mandatory forward contracts	0	0
Best effort forward contracts	0
Liabilities [Abstract]
Deposits	0	0
Accrued interest payable	0	0
Borrowings	0	0
Subordinated debentures	0	0
Level 2 [Member]
Assets [Abstract]
Cash and cash equivalents	0	0
Certificates of deposit held as investment	0	0
AFS Securities - U.S. government agency notes	10,119
HTM securities	48,948	49,662
LHFS	4,530	10,313
Loans receivable	0	0
Restricted stock investments	4,489	5,103
Accrued interest receivable	2,640	2,249
MSRs	0	0
IRLCs	22	162
Mandatory forward contracts	13	153
Best effort forward contracts	3
Liabilities [Abstract]
Deposits	594,659	572,556
Accrued interest payable	395	538
Borrowings	81,303	97,961
Subordinated debentures	0	0
Level 3 [Member]
Assets [Abstract]
Cash and cash equivalents	0	0
Certificates of deposit held as investment	0	0
AFS Securities - U.S. government agency notes	0
HTM securities	0	0
LHFS	0	0
Loans receivable	672,349	602,953
Restricted stock investments	0	0
Accrued interest receivable	0	0
MSRs	477	557
IRLCs	0	0
Mandatory forward contracts	0	0
Best effort forward contracts	0
Liabilities [Abstract]
Deposits	0	0
Accrued interest payable	0	0
Borrowings	0	0
Subordinated debentures	20,619	20,619
Carrying Value [Member]
Assets [Abstract]
Cash and cash equivalents	21,853	67,014
Certificates of deposit held as investment	8,780	100
AFS Securities - U.S. government agency notes	10,119
HTM securities	54,303	62,757
LHFS	4,530	10,307
Loans receivable	660,096	601,309
Restricted stock investments	4,489	5,103
Accrued interest receivable	2,640	2,249
MSRs	477	557
IRLCs	22	162
Mandatory forward contracts	13	153
Best effort forward contracts	3
Liabilities [Abstract]
Deposits	602,228	571,946
Accrued interest payable	395	538
Borrowings	88,500	103,500
Subordinated debentures	20,619	20,619
Total [Member]
Assets [Abstract]
Cash and cash equivalents	21,853	67,014
Certificates of deposit held as investment	8,780	100
AFS Securities - U.S. government agency notes	10,119
HTM securities	54,004	62,827
LHFS	4,530	10,313
Loans receivable	672,349	602,953
Restricted stock investments	4,489	5,103
Accrued interest receivable	2,640	2,249
MSRs	477	557
IRLCs	22	162
Mandatory forward contracts	13	153
Best effort forward contracts	3
Liabilities [Abstract]
Deposits	594,659	572,556
Accrued interest payable	395	538
Borrowings	81,303	97,961
Subordinated debentures	$ 20,619	$ 20,619