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Premises, Equipment, and Leases (Tables) | 12 Months Ended
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Dec. 31, 2017
Property, Plant and Equipment [Abstract] |
Summary of Premises and Equipment | Premises and equipment on December 31 are summarized below:
(Dollars in thousands) |  | 2017 |  | 2016
Land |  | $ | 104,454 |  |  | $ | 59,343 |
Buildings |  | 472,619 |  |  | 340,593 |
Leasehold improvements |  | 26,640 |  |  | 26,956 |
Furniture, fixtures, and equipment |  | 194,057 |  |  | 180,157 |
Fixed assets held-for-sale (a) |  | 53,195 |  |  | 5,832 |
Premises and equipment, at cost |  | 850,965 |  |  | 612,881 |
Less accumulated depreciation and amortization |  | 318,714 |  |  | 323,496 |
Premises and equipment, net |  | $ | 532,251 |  |  | $ | 289,385 |
Certain previously reported amounts have been reclassified to agree with current presentation. (a) Primarily comprised of land and buildings.
Minimum Future Lease Payments for Noncancelable Operating Leases on Premises and Equipment | Minimum future lease payments for noncancelable operating leases, primarily on premises, on December 31, 2017 are shown below. Aggregate minimum income under sublease agreements for these periods is not material.
(Dollars in thousands) |  |
2018 |  | $ | 29,862 |
2019 |  | 27,602 |
2020 |  | 25,242 |
2021 |  | 21,987 |
2022 |  | 17,028 |
2023 and after |  | 59,069 |
Total minimum lease payments |  | $ | 180,790 |
Rent Expense Incurred Under All Operating Lease Obligations | Rent expense incurred under all operating lease obligations for the years ended December 31 is as follows:
(Dollars in thousands) |  | 2017 |  | 2016 |  | 2015
Rent expense, gross |  | $ | 23,116 |  |  | $ | 20,812 |  |  | $ | 18,166 |
Sublease income |  | (631 | ) |  | (477 | ) |  | (5 | )
Rent expense, net |  | $ | 22,485 |  |  | $ | 20,335 |  |  | $ | 18,161 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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- Definition Tabular disclosure of rental expense from operating leases for each period for which an income statement is presented with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
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