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Goodwill and Other Intangible Assets, Mortgage Servicing Rights Roll-Forward (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Summary Of Changes In Balance Of Mortgage Servicing Rights Asset And Mortgage Servicing Rights Valuation Allowance [Abstract] |  |  |
Servicing Asset at Amortized Cost |  |  | $ 56,682
Cumulative effect of accounting methodology change |  |  | 2,296
Servicing Asset at Fair Value, Amount | $ 67,015 |  | 57,158
Servicing Asset at Fair Value, Additions | 3,042 | $ 3,348 |
Servicing Asset at Fair Value, Disposals | (2,637) |  |
Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions | 2,345 |  |
Servicing Asset at Fair Value, Other Changes in Fair Value | 7,106 |  |
Mortgage servicing rights |  |  |
Mortgage servicing rights at beginning of period | 56,682 | 59,967 | 59,967
Additions |  |  | 16,151
Amortization |  |  | (19,436)
Mortgage servicing rights at end of period |  |  | 56,682
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward] |  |  |
Valuation allowance at beginning of period | (1,820) | $ (18,006) | (18,006)
(Additions) recoveries, net |  |  | 16,186
Valuation allowance at end of period |  |  | (1,820)
Mortgage servicing rights, net(a) | 67,015 |  | 54,862
Fair value of mortgage servicing rights |  |  | 57,259
Portfolio of residential mortgage loans serviced for others (“servicing portfolio”) | $ 6,972,242 |  | $ 6,994,834
Mortgage servicing rights, net to servicing portfolio | 0.96% |  | 0.78%
Mortgage servicing rights expense(a) |  |  | $ 3,250

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- Definition Net amortized carrying amount (balance) as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs and allowances related to servicing arrangements. + References No definition available. + Details
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- Definition Summary of changes in balance of mortgage servicing rights asset and mortgage servicing rights valuation allowance. + References No definition available. + Details
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- Definition Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
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- Definition Fair value of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7516967&loc=d3e66267-113978 + Details
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- Definition Amount of increase (decrease) in fair value from changes in the inputs, assumptions, or model used to calculate the fair value of the contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(4)(i) -URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746 + Details
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- Definition Decrease in servicing assets subsequently measured at fair value resulting from conveyance of servicing rights to unrelated parties. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746 + Details
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