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Goodwill and Other Intangible Assets (Changes in the Carrying amount of Goodwill by Reporting Unit) (Details) $ in Thousands | 6 Months Ended
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Jun. 30, 2019 USD ($)
Goodwill [Line Items] |
Beginning Balance | $ 465,547
Ending Balance | 465,697
Acquisition of East West Capital Markets, LLC |
Goodwill [Line Items] |
Acquisition of East West Capital Markets, LLC | 150
Consumer and Business Banking |
Goodwill [Line Items] |
Beginning Balance | 353,321
Ending Balance | 353,321
Consumer and Business Banking | Acquisition of East West Capital Markets, LLC |
Goodwill [Line Items] |
Acquisition of East West Capital Markets, LLC | 0
Commercial Banking |
Goodwill [Line Items] |
Beginning Balance | 112,226
Ending Balance | 112,376
Commercial Banking | Acquisition of East West Capital Markets, LLC |
Goodwill [Line Items] |
Acquisition of East West Capital Markets, LLC | $ 150

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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