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Loans Receivable and Allowance for Credit Losses (Allowance for Credit Losses Narrative) (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Mar. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018
Financing Receivable Allowance for Credit Losses |  |  |  |  |  |  |  |  |
Allowance for loan losses | $ 632,071,000 |  | $ 632,071,000 |  |  |  | $ 358,287,000 |  |
Increase to allowance for loan losses |  |  |  | $ 273,800,000 |  |  |  |  |
Provision for credit losses | 102,443,000 | $ 19,245,000 | 176,313,000 | 41,824,000 |  |  |  |  |
Gross charge-offs | 0 | 317,000 | 0 | 390,000 |  |  |  |  |
PCD or PCI loans |  |  |  |  |  |  |  |  |
Financing Receivable Allowance for Credit Losses |  |  |  |  |  |  |  |  |
Allowance for loan losses |  |  |  |  |  |  | 0 |  |
Commercial and consumer lending |  |  |  |  |  |  |  |  |
Financing Receivable Allowance for Credit Losses |  |  |  |  |  |  |  |  |
Allowance for loan losses | 632,071,000 | 330,625,000 | 632,071,000 | 330,625,000 | $ 557,003,000 |  | 358,287,000 | $ 317,894,000 | $ 311,322,000
Provision for credit losses | 94,300,000 | 20,731,000 | 168,956,000 | 41,371,000 |  |  |  |  |
Gross charge-offs | 20,949,000 | 11,759,000 | 33,906,000 | 29,017,000 |  |  |  |  |
Commercial and industrial (“C&I”) |  |  |  |  |  |  |  |  |
Financing Receivable Allowance for Credit Losses |  |  |  |  |  |  |  |  |
Allowance for loan losses | 756,000 |  | 756,000 |  |  |  |  |  |
Commercial and industrial (“C&I”) | Commercial lending |  |  |  |  |  |  |  |  |
Financing Receivable Allowance for Credit Losses |  |  |  |  |  |  |  |  |
Allowance for loan losses | 380,723,000 | 205,503,000 | 380,723,000 | 205,503,000 | $ 362,629,000 |  | 238,376,000 | $ 189,757,000 | $ 189,117,000
Provision for credit losses | 37,862,000 | 26,140,000 | 98,480,000 | 41,404,000 |  |  |  |  |
Gross charge-offs | $ 20,378,000 | $ 11,745,000 | $ 32,355,000 | $ 28,989,000 |  |  |  |  |
Commercial and industrial (“C&I”) | Commercial lending | PCD or PCI loans |  |  |  |  |  |  |  |  |
Financing Receivable Allowance for Credit Losses |  |  |  |  |  |  |  |  |
Allowance for loan losses |  |  |  |  |  |  | $ 0 |  |
ASU 2016-13 |  |  |  |  |  |  |  |  |
Financing Receivable Allowance for Credit Losses |  |  |  |  |  |  |  |  |
Allowance for loan losses |  |  |  |  |  | $ 125,200,000 |  |  |
ASU 2016-13 | PCD or PCI loans |  |  |  |  |  |  |  |  |
Financing Receivable Allowance for Credit Losses |  |  |  |  |  |  |  |  |
Allowance for loan losses |  |  |  |  |  | $ 1,200,000 |  |  |

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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