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Leases | 12 Months Ended
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Dec. 31, 2016
Leases | (8) Leases The future minimum lease payments under all noncancelable leases at December 31, 2016, principally for trailing equipment, are shown in the following table (in thousands):
|  | Capital Leases |  |  | Operating Leases |
2017 |  | $ | 47,860 |  |  | $ | 634 |
2018 |  |  | 37,654 |  |  |  | 424 |
2019 |  |  | 29,431 |  |  |  | 123 |
2020 |  |  | 22,054 |  |  |  | 53 |
2021 |  |  | 7,572 |  |  |  | 53 |
Thereafter |  |  | — |  |  |  | 264 |
Total future minimum lease payments |  |  | 144,571 |  |  | $ | 1,551 |
Less amount representing interest (2.0% to 3.1%) |  |  | 6,267 |  |  |  |  |
Present value of minimum lease payments |  | $ | 138,304 |  |  |  |  |
Total rent expense/income, net of sublease income, was $1,641,000 income in fiscal year 2016, $318,000 expense in fiscal year 2015 and $587,000 income in fiscal year 2014.

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- Definition The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 Reference 3: 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=6453985&loc=d3e41499-112717 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1,3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 Reference 6: 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=6453985&loc=d3e41502-112717 + Details
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