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Allowance for Credit Losses and Credit Quality of Loans, Allowance for Credit Losses by Portfolio Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Activity in allowance for credit losses by portfolio segment [Roll Forward] |  |  |  |
Balance, beginning of period | $ 105,000 | $ 100,000 | $ 110,000 | $ 75,999
Charge-offs | (4,009) | (7,377) | (8,669) | (15,603)
Recoveries | 2,725 | 2,037 | 5,181 | 4,624
Provision | (5,216) | 18,840 | (8,012) | 48,480
Balance, end of period | 98,500 | 113,500 | 98,500 | 113,500
Commercial Loans [Member] |  |  |  |
Activity in allowance for credit losses by portfolio segment [Roll Forward] |  |  |  |
Balance, beginning of period | 50,045 | 42,212 | 50,942 | 27,156
Charge-offs | (389) | (709) | (631) | (1,729)
Recoveries | 61 | 113 | 179 | 341
Provision | (5,526) | 8,770 | (6,299) | 24,618
Balance, end of period | 44,191 | 50,386 | 44,191 | 50,386
Consumer Loans [Member] |  |  |  |
Activity in allowance for credit losses by portfolio segment [Roll Forward] |  |  |  |
Balance, beginning of period | 34,580 | 37,546 | 37,803 | 32,122
Charge-offs | (3,271) | (6,178) | (7,619) | (13,069)
Recoveries | 2,288 | 1,810 | 4,363 | 4,045
Provision | 1,284 | 6,916 | 334 | 16,996
Balance, end of period | 34,881 | 40,094 | 34,881 | 40,094
Residential [Member] |  |  |  |
Activity in allowance for credit losses by portfolio segment [Roll Forward] |  |  |  |
Balance, beginning of period | 20,375 | 20,242 | 21,255 | 16,721
Charge-offs | (349) | (490) | (419) | (805)
Recoveries | 376 | 114 | 639 | 238
Provision | (974) | 3,154 | (2,047) | 6,866
Balance, end of period | $ 19,428 | $ 23,020 | $ 19,428 | $ 23,020

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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=123577603&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=124255206&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=124255953&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=124255953&loc=SL82919249-210447 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) + Details
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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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