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Borrowings - Long Term Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding Balance	$ 238,324	$ 304,675
Weighted Average Interest Rate	0.47%	0.89%
Securities sold under agreements to repurchase
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding Balance	$ 32,199	$ 23,745
Weighted Average Interest Rate	0.47%	0.89%
FHLB advances
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding Balance	$ 0	$ 250,000
Weighted Average Interest Rate	0.00%	1.60%
Subordinated debt
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding Balance	$ 189,527	$ 30,930
Weighted Average Interest Rate	5.10%	5.13%
Other Borrowings
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding Balance	$ 16,598	$ 0
Weighted Average Interest Rate	1.88%	0.00%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Weighted average interest rate of debt outstanding.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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