Loans and Allowance for Loan Losses - Schedule of Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Allowance for Loan Losses [Roll Forward]
Beginning balance			$ 5,227	$ 5,176	$ 5,176
Charge-offs			(120)	(107)	(391)
Recoveries			32	85	96
Provision (recovery)	$ 911	$ 205	1,261	255	346
Ending balance	6,400	5,409	6,400	5,409	5,227
Additional Information on Allowance for Loan Losses and Recorded Investment in Loans Receivable [Abstract]
Ending balances individually evaluated for impairment	136		136		229
Ending balances collectively evaluated for impairment	6,264		6,264		4,998
Loans receivable, individually evaluated for impairment	10,305		10,305		3,646
Loans receivable, collectively evaluated for impairment	612,355		612,355		546,580
Total Loans	622,660		622,660		550,226
Commercial and Industrial [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance			296	483	483
Charge-offs			(99)	(74)	(328)
Recoveries			7	1	2
Provision (recovery)			339	162	139
Ending balance	543	572	543	572	296
Additional Information on Allowance for Loan Losses and Recorded Investment in Loans Receivable [Abstract]
Ending balances individually evaluated for impairment	69		69		0
Ending balances collectively evaluated for impairment	474		474		296
Loans receivable, individually evaluated for impairment	702		702		187
Loans receivable, collectively evaluated for impairment	86,342		86,342		27,217
Total Loans	87,044		87,044		27,404
Commercial Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance			1,788	1,738	1,738
Charge-offs			0	0	0
Recoveries			5	75	80
Provision (recovery)			382	(34)	(30)
Ending balance	2,175	1,779	2,175	1,779	1,788
Additional Information on Allowance for Loan Losses and Recorded Investment in Loans Receivable [Abstract]
Ending balances individually evaluated for impairment	67		67		229
Ending balances collectively evaluated for impairment	2,108		2,108		1,559
Loans receivable, individually evaluated for impairment	9,025		9,025		2,847
Loans receivable, collectively evaluated for impairment	177,979		177,979		179,051
Total Loans	187,004		187,004		181,898
Construction and Land [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance			652	635	635
Charge-offs			0	0	0
Recoveries			0	0	0
Provision (recovery)			366	15	17
Ending balance	1,018	650	1,018	650	652
Additional Information on Allowance for Loan Losses and Recorded Investment in Loans Receivable [Abstract]
Ending balances individually evaluated for impairment	0		0		0
Ending balances collectively evaluated for impairment	1,018		1,018		652
Loans receivable, individually evaluated for impairment	201		201		233
Loans receivable, collectively evaluated for impairment	73,500		73,500		64,998
Total Loans	73,701		73,701		65,231
Consumer [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance			154	145	145
Charge-offs			(19)	(23)	(50)
Recoveries			20	9	14
Provision (recovery)			(2)	10	45
Ending balance	153	141	153	141	154
Additional Information on Allowance for Loan Losses and Recorded Investment in Loans Receivable [Abstract]
Ending balances individually evaluated for impairment	0		0		0
Ending balances collectively evaluated for impairment	153		153		154
Loans receivable, individually evaluated for impairment	0		0		0
Loans receivable, collectively evaluated for impairment	6,428		6,428		5,958
Total Loans	6,428		6,428		5,958
Student [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance			65	68	68
Charge-offs			(2)	(10)	(13)
Recoveries			0	0	0
Provision (recovery)			10	9	10
Ending balance	73	67	73	67	65
Additional Information on Allowance for Loan Losses and Recorded Investment in Loans Receivable [Abstract]
Ending balances individually evaluated for impairment	0		0		0
Ending balances collectively evaluated for impairment	73		73		65
Loans receivable, individually evaluated for impairment	0		0		0
Loans receivable, collectively evaluated for impairment	7,832		7,832		8,151
Total Loans	7,832		7,832		8,151
Residential Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance			1,596	1,311	1,311
Charge-offs			0	0	0
Recoveries			0	0	0
Provision (recovery)			182	137	285
Ending balance	1,778	1,448	1,778	1,448	1,596
Additional Information on Allowance for Loan Losses and Recorded Investment in Loans Receivable [Abstract]
Ending balances individually evaluated for impairment	0		0		0
Ending balances collectively evaluated for impairment	1,778		1,778		1,596
Loans receivable, individually evaluated for impairment	377		377		379
Loans receivable, collectively evaluated for impairment	227,540		227,540		224,937
Total Loans	227,917		227,917		225,316
Home Equity Lines of Credit [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance			326	446	446
Charge-offs			0	0	0
Recoveries			0	0	0
Provision (recovery)			(16)	(44)	(120)
Ending balance	310	402	310	402	326
Additional Information on Allowance for Loan Losses and Recorded Investment in Loans Receivable [Abstract]
Ending balances individually evaluated for impairment	0		0		0
Ending balances collectively evaluated for impairment	310		310		326
Loans receivable, individually evaluated for impairment	0		0		0
Loans receivable, collectively evaluated for impairment	32,734		32,734		36,268
Total Loans	32,734		32,734		36,268
Unallocated [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance			350	350	350
Charge-offs			0	0	0
Recoveries			0	0	0
Provision (recovery)			0	0	0
Ending balance	350	$ 350	350	$ 350	350
Additional Information on Allowance for Loan Losses and Recorded Investment in Loans Receivable [Abstract]
Ending balances individually evaluated for impairment	0		0		0
Ending balances collectively evaluated for impairment	$ 350		$ 350		$ 350

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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