Loans and Allowance for Loan Losses - Schedule of Loans Receivable Disaggregated by Past Due Status (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	$ 15,645	$ 1,614
Current Loans	2,211,083	1,558,158
Total loans	2,226,728	1,559,772
30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	9,854	1,142
60-89 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	1,332	121
90 Days or Greater
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	4,459	351
Residential Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	10,846	1,506
Current Loans	906,720	602,825
Total loans	917,566	604,331
Residential Mortgage | 30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	8,710	1,034
Residential Mortgage | 60-89 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	1,089	121
Residential Mortgage | 90 Days or Greater
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	1,047	351
Commercial Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	3,972
Current Loans	1,056,602	757,957
Total loans	1,060,574	757,957
Commercial Mortgage | 30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	811
Commercial Mortgage | 90 Days or Greater
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	3,161
Commercial & Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	749
Current Loans	132,487	93,712
Total loans	133,236	93,712
Commercial & Industrial | 30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	272
Commercial & Industrial | 60-89 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	226
Commercial & Industrial | 90 Days or Greater
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	251
Consumer loans
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	9	108
Current Loans	34,668	34,328
Total loans	34,677	34,436
Consumer loans | 30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	4	108
Consumer loans | 60-89 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	5
Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	69
Current Loans	80,606	69,336
Total loans	80,675	$ 69,336
Home Equity | 30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	57
Home Equity | 60-89 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	$ 12