XML 34 R20.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Significant Accounting Policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Accounting Policies [Abstract] |
Disaggregated Revenue [Table Text Block] |
|  | Year Ended December 31,
(In thousands) |  | 2016 |  | 2015 |  | 2014
LTL services |  | $ | 2,939,572 |  |  | $ | 2,893,683 |  |  | $ | 2,706,654 |
Other services |  | 51,945 |  |  | 78,759 |  |  | 81,243 |
Total revenue |  | $ | 2,991,517 |  |  | $ | 2,972,442 |  |  | $ | 2,787,897 |
Estimated Useful Lives Of Property And Equipment | Depreciation of property and equipment is calculated using the straight-line method over the estimated useful lives of the related assets. The following table provides the estimated useful lives by asset type:
Structures |  | 7 to 30 years
Revenue equipment |  | 4 to 15 years
Other equipment |  | 2 to 20 years
Leasehold improvements |  | Lesser of economic life or life of lease
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] |
|  | Year Ended December 31,
(In thousands) |  | 2016 |  | 2015 |  | 2014
Acquisition of property and equipment by capital lease |  | $ | — |  |  | $ | 3,552 |  |  | $ | — |

X
- Definition [Table Text Block] for Disaggregated Revenue [Table] + References No definition available. + Details
Name: | odfl_DisaggregatedRevenueTableTextBlock
Namespace Prefix: | odfl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration