Loans - Non-accrual (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	$ 42,763	$ 21,138
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	1
Amortized Cost Basis of Non-accrual Loans without Related Allowance	32,337
Commercial, secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans		12,314
Non-owner occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	16,537
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	14,719
Owner occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	14,271
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	12,371
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	626
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	0
Non-owner occupied residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	2,217
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	1,580
Commercial, industrial and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	2,633	1,539
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	1,418
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	1,440	967
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	1,234
Equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	327	284
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	0
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	2,469	3,428
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	1,015
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	2,243	$ 2,606
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	1
Amortized Cost Basis of Non-accrual Loans without Related Allowance	$ 0