Loans Receivable and Allowance for Credit Losses (TDR Post-Modification) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment	$ 15,735
Principal
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment	4,564
Principal and Interest
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment	11,171
Commercial lending | Commercial and industrial (“C&I”)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment	15,735
Commercial lending | Commercial and industrial (“C&I”) | Principal
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment	4,564
Commercial lending | Commercial and industrial (“C&I”) | Principal and Interest
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment	$ 11,171
Non-PCI Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment		$ 29,176
Non-PCI Loans | Principal
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment		29,176
Non-PCI Loans | Principal and Interest
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment		0
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment		29,176
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”) | Principal
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment		29,176
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”) | Principal and Interest
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post- Modification Outstanding Recorded Investment		$ 0