Loans and the Allowance for Loan Losses - Schedule of Loans Receivable Disaggregated by Past Due Status (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	$ 5,744	$ 1,614
Current Loans	2,090,806	1,558,158
Total loans	2,096,550	1,559,772
30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	4,463	1,142
60-89 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	737	121
90 Days or Greater
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	544	351
Residential Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	3,199	1,506
Current Loans	935,360	602,825
Total loans	938,559	604,331
Residential Mortgage | 30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	2,093	1,034
Residential Mortgage | 60-89 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	721	121
Residential Mortgage | 90 Days or Greater
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	385	351
Commercial Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	1,943
Current Loans	903,499	757,957
Total loans	905,442	757,957
Commercial Mortgage | 30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	1,943
Commercial & Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	584
Current Loans	133,723	93,712
Total loans	134,307	93,712
Commercial & Industrial | 30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	425
Commercial & Industrial | 90 Days or Greater
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	159
Consumer loans
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	6	108
Current Loans	32,422	34,328
Total loans	32,428	34,436
Consumer loans | 30-59 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	2	108
Consumer loans | 60-89 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	4
Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	12
Current Loans	85,802	69,336
Total loans	85,814	$ 69,336
Home Equity | 60-89 Days Past Due
Financing Receivable Allowance For Credit Losses [Line Items]
Total Past Due	$ 12