Loans - Collateral Pledged Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 3,867,383	$ 3,634,596
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,192,271	2,047,646
Commercial | Owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	496,306	519,577
Commercial | Non–owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	999,636	973,331
Commercial | Development & spec land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	26,372	35,954
Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	659,887	$ 505,859
Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	14,980
ACL Allocation	1,857
Collateral Pledged | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	14,980
ACL Allocation	1,857
Collateral Pledged | Commercial | Owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	11,423
ACL Allocation	1,605
Collateral Pledged | Commercial | Non–owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,032
ACL Allocation	0
Collateral Pledged | Commercial | Development & spec land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	70
ACL Allocation	0
Collateral Pledged | Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,455
ACL Allocation	252
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	14,656
Real Estate | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	14,656
Real Estate | Commercial | Owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	11,309
Real Estate | Commercial | Non–owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,032
Real Estate | Commercial | Development & spec land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	70
Real Estate | Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,245
Accounts Receivable/Equipment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	324
Accounts Receivable/Equipment | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	324
Accounts Receivable/Equipment | Commercial | Owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	114
Accounts Receivable/Equipment | Commercial | Non–owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0
Accounts Receivable/Equipment | Commercial | Development & spec land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0
Accounts Receivable/Equipment | Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	210
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0
Other | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0
Other | Commercial | Owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0
Other | Commercial | Non–owner occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0
Other | Commercial | Development & spec land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0
Other | Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 0