Acquisition - Acquired Loans at Acquisition Date (Details) - BORO $ in Thousands	Aug. 01, 2018 USD ($)
Information about the acquired loans at acquisition
Carryover of Allowance for Loan and Lease Losses, Loans Acquired	$ 0
Total loans	326,618
Commercial and industrial
Information about the acquired loans at acquisition
Total loans	100,386
Real estate
Information about the acquired loans at acquisition
Total loans	180,064
Construction and land development
Information about the acquired loans at acquisition
Total loans	37,134
Consumer
Information about the acquired loans at acquisition
Total loans	9,034
Non-PCI
Information about the acquired loans at acquisition
Total loans	319,089
Non-PCI | Commercial and industrial
Information about the acquired loans at acquisition
Total loans	98,259
Non-PCI | Real estate
Information about the acquired loans at acquisition
Total loans	174,675
Non-PCI | Construction and land development
Information about the acquired loans at acquisition
Total loans	37,134
Non-PCI | Consumer
Information about the acquired loans at acquisition
Total loans	9,021
PCI loans
Information about the acquired loans at acquisition
Total loans	7,529
PCI loans | Commercial and industrial
Information about the acquired loans at acquisition
Total loans	2,127
PCI loans | Real estate
Information about the acquired loans at acquisition
Total loans	5,389
PCI loans | Consumer
Information about the acquired loans at acquisition
Total loans	$ 13