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Related Party (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Related Party Transaction [Line Items] |  |  |
Due to Related Parties, Current | $ 100,000 | $ 100,000 |
Operating Leases, Rent Expense | 1,000,000 | 3,300,000 | $ 8,300,000
Payments to Acquire Property, Plant, and Equipment | 86,088,000 | 217,253,000 | 204,973,000
Related Party Transaction, Expenses from Transactions with Related Party | 8,154,000 | 53,039,000 | 49,882,000
Related Party [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Payments for tractor purchase | 4,300,000 | 58,599,000 | 46,562,000
proceeds from sale of trailers | (108,000) | (28,000) | (103,000)
proceeds from sale of tractors | 0 | (38,064,000) | (15,564,000)
Payments for parts and services | 1,300,000 | 4,346,000 | 5,906,000
Operating Leases, Rent Expense | 1,000,000 | 3,000,000 | 6,800,000
Payments to Acquire Property, Plant, and Equipment | 0 | 21,555,000 | 2,825,000
Administrative Services Revenue | 0 | 0 | (516,000)
Revenue Equipment [Member] | Related Party [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Operating Leases, Rent Expense | 813,000 | 3,223,000 | 6,842,000
Terminal Facilities [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Operating Leases, Rent Expense | 2,200,000 | 3,900,000 | 4,200,000
Terminal Facilities [Member] | Related Party [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Operating Leases, Rent Expense | 1,849,000 | 3,408,000 | 3,930,000
Related Party Transaction, Expenses from Transactions with Related Party | $ 1,900,000 | $ 3,600,000 | $ 3,900,000

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- Definition Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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