Loans - Schedule of Allowance for Loan Losses and Recorded Investment in Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2017
Allowance for Loan Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	$ 13,835
Charge-offs	(2,068)	$ (132)
Recoveries	85	38
Provisions	4,000	150
Allowance for Loan Losses, Ending Balance	15,852	14,020
Allowance for Loan Losses, Ending Balance	15,852	14,020	$ 15,852	$ 13,835	$ 14,020	$ 13,964
Allowance for loan losses: Ending balance: individually evaluated for impairment			78	42	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment			15,774	13,793	14,020
Total Loans Receivable			1,606,039	1,272,601	1,301,335
Loans receivables: Ending balance: individually evaluated for impairment			8,584	7,702	7,191
Loans Receivable: Ending balance: collectively evaluated for impairment			1,597,455	1,264,899	1,294,144
Commercial and Industrial
Allowance for Loan Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	2,400
Charge-offs	(2,017)	(31)
Recoveries	70	14
Provisions	2,193	40
Allowance for Loan Losses, Ending Balance	2,646	2,620
Allowance for Loan Losses, Ending Balance	2,646	2,620	2,646	2,400	2,620	2,597
Allowance for loan losses: Ending balance: individually evaluated for impairment			36	42	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment			2,610	2,358	2,620
Total Loans Receivable			208,859	149,315	175,309
Loans receivables: Ending balance: individually evaluated for impairment			58	65	0
Loans Receivable: Ending balance: collectively evaluated for impairment			208,801	149,250	175,309
Commercial Real Estate
Allowance for Loan Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	6,693
Charge-offs	0	0
Recoveries	6	0
Provisions	812	70
Allowance for Loan Losses, Ending Balance	7,511	6,278
Allowance for Loan Losses, Ending Balance	7,511	6,278	7,511	6,693	6,278	6,208
Allowance for loan losses: Ending balance: individually evaluated for impairment			42	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment			7,469	6,693	6,278
Total Loans Receivable			763,415	567,048	544,273
Loans receivables: Ending balance: individually evaluated for impairment			8,357	7,383	6,654
Loans Receivable: Ending balance: collectively evaluated for impairment			755,058	559,665	537,619
Commercial Real Estate Construction
Allowance for Loan Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	298
Charge-offs	0	0
Recoveries	0	0
Provisions	(67)	38
Allowance for Loan Losses, Ending Balance	231	241
Allowance for Loan Losses, Ending Balance	231	241	231	298	241	203
Allowance for loan losses: Ending balance: individually evaluated for impairment			0	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment			231	298	241
Total Loans Receivable			44,198	26,416	29,726
Loans receivables: Ending balance: individually evaluated for impairment			0	0	0
Loans Receivable: Ending balance: collectively evaluated for impairment			44,198	26,416	29,726
Residential Mortgage
Allowance for Loan Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	2,555
Charge-offs	0	(6)
Recoveries	0	1
Provisions	146	(72)
Allowance for Loan Losses, Ending Balance	2,701	2,737
Allowance for Loan Losses, Ending Balance	2,701	2,737	2,701	2,555	2,737	2,814
Allowance for loan losses: Ending balance: individually evaluated for impairment			0	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment			2,701	2,555	2,737
Total Loans Receivable			456,436	408,337	426,426
Loans receivables: Ending balance: individually evaluated for impairment			101	171	537
Loans Receivable: Ending balance: collectively evaluated for impairment			456,335	408,166	425,889
Home Equity Lines of Credit
Allowance for Loan Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	619
Charge-offs	0	(51)
Recoveries	0	0
Provisions	(14)	56
Allowance for Loan Losses, Ending Balance	605	616
Allowance for Loan Losses, Ending Balance	605	616	605	619	616	611
Allowance for loan losses: Ending balance: individually evaluated for impairment			0	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment			605	619	616
Total Loans Receivable			118,603	108,047	111,333
Loans receivables: Ending balance: individually evaluated for impairment			68	83	0
Loans Receivable: Ending balance: collectively evaluated for impairment			118,535	107,964	111,333
Consumer
Allowance for Loan Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	650
Charge-offs	(51)	(44)
Recoveries	9	23
Provisions	15	26
Allowance for Loan Losses, Ending Balance	623	697
Allowance for Loan Losses, Ending Balance	623	697	623	650	697	692
Allowance for loan losses: Ending balance: individually evaluated for impairment			0	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment			623	650	697
Total Loans Receivable			14,528	13,438	14,268
Loans receivables: Ending balance: individually evaluated for impairment			0	0	0
Loans Receivable: Ending balance: collectively evaluated for impairment			14,528	13,438	14,268
Unallocated
Allowance for Loan Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	620
Charge-offs	0	0
Recoveries	0	0
Provisions	915	(8)
Allowance for Loan Losses, Ending Balance	1,535	831
Allowance for Loan Losses, Ending Balance	$ 1,535	$ 831	1,535	620	831	$ 839
Allowance for loan losses: Ending balance: individually evaluated for impairment			0	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment			1,535	620	831
Total Loans Receivable			0	0	0
Loans receivables: Ending balance: individually evaluated for impairment			0	0	0
Loans Receivable: Ending balance: collectively evaluated for impairment			$ 0	$ 0	$ 0