Nature of Operations and Summary of Significant Accounting Policies - Impact of ASC 326 (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses	$ 57,027	$ 22,577	$ 17,667
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		13,618
Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		4,048
Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses	$ 1,267	0	1,077
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		4,911
As Reported Under ASC 326
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		40,244
As Reported Under ASC 326 | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		25,614
As Reported Under ASC 326 | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		4,971
As Reported Under ASC 326 | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		1,077
As Reported Under ASC 326 | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		8,582
Pre–ASC 326 Adoption
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		17,667	22,577
Pre–ASC 326 Adoption | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		11,996
Pre–ASC 326 Adoption | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		923
Pre–ASC 326 Adoption | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		1,077	$ 0
Pre–ASC 326 Adoption | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses		$ 3,671