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Reserve for Loan and Lease Losses (Details) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 USD ($) | Mar. 31, 2017 USD ($) | Mar. 31, 2018 USD ($) item | Dec. 31, 2017 USD ($)
Reserve for loan and lease losses |  |  |  |
Number of classes existing in loan and lease portfolio | item |  |  | 8 |
Changes in reserve for loan and lease losses |  |  |  |
Balance at the beginning of the period | $ 94,883 | $ 88,543 |  |
Charge-offs | 556 | 1,558 |  |
Recoveries | 218 | 2,133 |  |
Net charge-offs (recoveries) | 338 | (575) |  |
Provision (recovery of provision) | 3,786 | 1,000 |  |
Balance at the end of the period | 98,331 | 90,118 |  |
Reserve for loan and lease losses |  |  |  |
Ending balance, individually evaluated for impairment |  |  | $ 1,197 | $ 666
Ending balance, collectively evaluated for impairment |  |  | 97,134 | 94,217
Total reserve for loan and lease losses | 94,883 | 88,543 | 98,331 | 94,883
Recorded investment in loans |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 23,091 | 17,117
Ending balance, collectively evaluated for impairment |  |  | 4,668,006 | 4,510,561
Total loans and leases |  |  | 4,691,097 | 4,527,678
Commercial and agricultural |  |  |  |
Changes in reserve for loan and lease losses |  |  |  |
Balance at the beginning of the period | 16,228 | 14,668 |  |
Charge-offs | 25 | 208 |  |
Recoveries | 49 | 595 |  |
Net charge-offs (recoveries) | (24) | (387) |  |
Provision (recovery of provision) | 1,357 | 934 |  |
Balance at the end of the period | 17,609 | 15,989 |  |
Reserve for loan and lease losses |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 0 | 0
Ending balance, collectively evaluated for impairment |  |  | 17,609 | 16,228
Total reserve for loan and lease losses | 16,228 | 14,668 | 17,609 | 16,228
Recorded investment in loans |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 3,013 | 2,439
Ending balance, collectively evaluated for impairment |  |  | 1,008,687 | 927,558
Total loans and leases |  |  | 1,011,700 | 929,997
Auto and light truck |  |  |  |
Changes in reserve for loan and lease losses |  |  |  |
Balance at the beginning of the period | 10,103 | 8,064 |  |
Charge-offs | 316 | 21 |  |
Recoveries | 6 | 1,127 |  |
Net charge-offs (recoveries) | 310 | (1,106) |  |
Provision (recovery of provision) | 1,017 | 602 |  |
Balance at the end of the period | 10,810 | 9,772 |  |
Reserve for loan and lease losses |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 360 | 243
Ending balance, collectively evaluated for impairment |  |  | 10,450 | 9,860
Total reserve for loan and lease losses | 10,103 | 8,064 | 10,810 | 10,103
Recorded investment in loans |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 8,885 | 7,780
Ending balance, collectively evaluated for impairment |  |  | 502,166 | 489,036
Total loans and leases |  |  | 511,051 | 496,816
Medium and heavy duty truck |  |  |  |
Changes in reserve for loan and lease losses |  |  |  |
Balance at the beginning of the period | 4,844 | 4,740 |  |
Charge-offs | 0 | 0 |  |
Recoveries | 0 | 0 |  |
Net charge-offs (recoveries) | 0 | 0 |  |
Provision (recovery of provision) | (351) | (64) |  |
Balance at the end of the period | 4,493 | 4,676 |  |
Reserve for loan and lease losses |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 0 | 0
Ending balance, collectively evaluated for impairment |  |  | 4,493 | 4,844
Total reserve for loan and lease losses | 4,844 | 4,740 | 4,493 | 4,844
Recorded investment in loans |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 337 | 371
Ending balance, collectively evaluated for impairment |  |  | 279,673 | 296,564
Total loans and leases |  |  | 280,010 | 296,935
Aircraft |  |  |  |
Changes in reserve for loan and lease losses |  |  |  |
Balance at the beginning of the period | 34,619 | 34,352 |  |
Charge-offs | 29 | 1,103 |  |
Recoveries | 44 | 183 |  |
Net charge-offs (recoveries) | (15) | 920 |  |
Provision (recovery of provision) | 202 | (1,424) |  |
Balance at the end of the period | 34,836 | 32,008 |  |
Reserve for loan and lease losses |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 431 | 0
Ending balance, collectively evaluated for impairment |  |  | 34,405 | 34,619
Total reserve for loan and lease losses | 34,619 | 34,352 | 34,836 | 34,619
Recorded investment in loans |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 5,752 | 1,901
Ending balance, collectively evaluated for impairment |  |  | 862,667 | 842,756
Total loans and leases |  |  | 868,419 | 844,657
Construction equipment |  |  |  |
Changes in reserve for loan and lease losses |  |  |  |
Balance at the beginning of the period | 9,343 | 8,207 |  |
Charge-offs | 5 | 0 |  |
Recoveries | 19 | 22 |  |
Net charge-offs (recoveries) | (14) | (22) |  |
Provision (recovery of provision) | 1,560 | 703 |  |
Balance at the end of the period | 10,917 | 8,932 |  |
Reserve for loan and lease losses |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 101 | 108
Ending balance, collectively evaluated for impairment |  |  | 10,816 | 9,235
Total reserve for loan and lease losses | 9,343 | 8,207 | 10,917 | 9,343
Recorded investment in loans |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 945 | 928
Ending balance, collectively evaluated for impairment |  |  | 618,274 | 562,509
Total loans and leases |  |  | 619,219 | 563,437
Commercial real estate |  |  |  |
Changes in reserve for loan and lease losses |  |  |  |
Balance at the beginning of the period | 14,792 | 13,677 |  |
Charge-offs | 7 | 2 |  |
Recoveries | 21 | 50 |  |
Net charge-offs (recoveries) | (14) | (48) |  |
Provision (recovery of provision) | (36) | 143 |  |
Balance at the end of the period | 14,770 | 13,868 |  |
Reserve for loan and lease losses |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 173 | 181
Ending balance, collectively evaluated for impairment |  |  | 14,597 | 14,611
Total reserve for loan and lease losses | 14,792 | 13,677 | 14,770 | 14,792
Recorded investment in loans |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 3,809 | 3,346
Ending balance, collectively evaluated for impairment |  |  | 745,117 | 738,222
Total loans and leases |  |  | 748,926 | 741,568
Residential real estate and home equity |  |  |  |
Changes in reserve for loan and lease losses |  |  |  |
Balance at the beginning of the period | 3,666 | 3,550 |  |
Charge-offs | 11 | 4 |  |
Recoveries | 6 | 71 |  |
Net charge-offs (recoveries) | 5 | (67) |  |
Provision (recovery of provision) | (96) | (25) |  |
Balance at the end of the period | 3,565 | 3,592 |  |
Reserve for loan and lease losses |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 132 | 134
Ending balance, collectively evaluated for impairment |  |  | 3,433 | 3,532
Total reserve for loan and lease losses | 3,666 | 3,550 | 3,565 | 3,666
Recorded investment in loans |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 350 | 352
Ending balance, collectively evaluated for impairment |  |  | 517,780 | 525,770
Total loans and leases |  |  | 518,130 | 526,122
Consumer |  |  |  |
Changes in reserve for loan and lease losses |  |  |  |
Balance at the beginning of the period | 1,288 | 1,285 |  |
Charge-offs | 163 | 220 |  |
Recoveries | 73 | 85 |  |
Net charge-offs (recoveries) | 90 | 135 |  |
Provision (recovery of provision) | 133 | 131 |  |
Balance at the end of the period | 1,331 | 1,281 |  |
Reserve for loan and lease losses |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 0 | 0
Ending balance, collectively evaluated for impairment |  |  | 1,331 | 1,288
Total reserve for loan and lease losses | $ 1,288 | $ 1,285 | 1,331 | 1,288
Recorded investment in loans |  |  |  |
Ending balance, individually evaluated for impairment |  |  | 0 | 0
Ending balance, collectively evaluated for impairment |  |  | 133,642 | 128,146
Total loans and leases |  |  | $ 133,642 | $ 128,146

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- Definition Amount of direct write-downs of financing receivables charged against the allowance net of recoveries. + References No definition available. + Details
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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 The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + 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 (g) -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 Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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