XML 18 R33.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Shareholders' Equity (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2011 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Shareholders' Equity [Abstract] |  |  |  |
Maximum offering price under ATM program |  | $ 100,000,000 |  |
Aggregate Number of Shares Sold | 1,516,379 | 0 |  |
Aggregate Gross Proceeds | 49,575,000 |  |  |
Aggregate Net Proceeds |  | $ 48,400,000 | $ 0 | $ 0
Average Sales Price Per Share | $ 32.69 |  |  |
Stock issuance program, expiry date |  | February 2, 2012 |  |

X
- Definition Maximum Offering Price of Common Stock under ATM Program + References No definition available. + Details
Name: | odfl_MaximumOfferingPriceOfCommonStockUnderAtmProgram
Namespace Prefix: | odfl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Stock issuance program, expiry date. + References No definition available. + Details
Name: | odfl_StockIssuanceProgramExpiryDate
Namespace Prefix: | odfl_
Data Type: | invest:dateStringItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The dollar amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section H + Details
Name: | us-gaap_SaleOfStockPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodValueOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration