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Loans Receivable and Allowance for Credit Losses (Amortized Cost of Loans on Nonaccrual Status) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | $ 36,238 | $ 126,676
Commercial lending |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | 29,096 | 110,096
Commercial lending | Commercial and industrial (“C&I”) |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | 15,270 | 62,040
Commercial lending | Commercial real estate (“CRE”) |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | 13,826 | 45,537
Commercial lending | Real estate loan | Multifamily residential |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | 0 | 2,519
Commercial lending | Total CRE |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | 13,826 | 48,056
Consumer lending |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | 7,142 | 16,580
Consumer lending | Real estate loan | Single-family residential |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | 1,534 | 6,013
Consumer lending | HELOCs |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | 5,608 | 8,076
Consumer lending | Total residential mortgage |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | 7,142 | 14,089
Consumer lending | Other consumer |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Total nonaccrual loans with no related allowance for loan losses | $ 0 | $ 2,491

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- Definition Amount of financing receivable on nonaccrual status with no allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 + Details
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