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ALLL Activity (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Allowance for loan and lease losses |  |
Balance at beginning of period | $ 129,568 | $ 129,572
Provision for loan losses | 795 | 1,598
Charge-offs | (5,007) | (4,229)
Recoveries | 2,252 | 2,285
Balance at end of period | 127,608 | 129,226
Residential Real Estate | Residential Real Estate |  |
Allowance for loan and lease losses |  |
Balance at beginning of period | 10,798 | 12,436
Provision for loan losses | (177) | (926)
Charge-offs | (3) | (22)
Recoveries | 16 | 47
Balance at end of period | 10,634 | 11,535
Commercial | Commercial Real Estate |  |
Allowance for loan and lease losses |  |
Balance at beginning of period | 68,515 | 65,773
Provision for loan losses | 245 | (370)
Charge-offs | (1,033) | (888)
Recoveries | 615 | 238
Balance at end of period | 68,342 | 64,753
Commercial | Other Commercial |  |
Allowance for loan and lease losses |  |
Balance at beginning of period | 39,303 | 37,823
Provision for loan losses | (3) | 1,621
Charge-offs | (1,788) | (471)
Recoveries | 596 | 184
Balance at end of period | 38,108 | 39,157
Consumer and Other | Home Equity |  |
Allowance for loan and lease losses |  |
Balance at beginning of period | 6,204 | 7,572
Provision for loan losses | (202) | 129
Charge-offs | (12) | (96)
Recoveries | 50 | 74
Balance at end of period | 6,040 | 7,679
Consumer and Other | Other Consumer |  |
Allowance for loan and lease losses |  |
Balance at beginning of period | 4,748 | 5,968
Provision for loan losses | 932 | 1,144
Charge-offs | (2,171) | (2,752)
Recoveries | 975 | 1,742
Balance at end of period | $ 4,484 | $ 6,102

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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