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Schedule II - Valuation And Qualifying Accounts | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Schedule II Valuation And Qualifying Accounts | The Schedule II – Valuation and Qualifying Accounts schedule of Old Dominion Freight Line, Inc. is included below: Schedule II Old Dominion Freight Line, Inc. Valuation and Qualifying Accounts
(In thousands) |  | Allowance for Uncollectible Accounts(1)
Year Ended December 31, |  | Balance at Beginning of Period |  | Charged to Expense |  | Deductions(2) |  | Balance at End of Period
2015 |  | $ | 5,564 |  |  | $ | 1,511 |  |  | $ | 2,622 |  |  | $ | 4,453 |
2016 |  | $ | 4,453 |  |  | $ | 1,427 |  |  | $ | 2,797 |  |  | $ | 3,083 |
2017 |  | $ | 3,083 |  |  | $ | 2,555 |  |  | $ | 2,150 |  |  | $ | 3,488 |
(1) | This table does not include any allowances for revenue adjustments that result from billing corrections, customer allowances, money-back service guarantees and other miscellaneous revenue adjustments that are recorded in our revenue from operations.
(2) | Uncollectible accounts written off, net of recoveries.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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