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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts | SCHEDULE II WERNER ENTERPRISES, INC. VALUATION AND QUALIFYING ACCOUNTS
(In thousands) | Balance at Beginning of Period |  | Charged to Costs and Expenses |  | Write-offs (Recoveries) of Doubtful Accounts |  | Balance at End of Period
Year ended December 31, 2013: |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 10,528 |  |  | $ | 15 |  |  | $ | 604 |  |  | $ | 9,939 |
Year ended December 31, 2012: |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 10,154 |  |  | $ | 478 |  |  | $ | 104 |  |  | $ | 10,528 |
Year ended December 31, 2011: |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 9,484 |  |  | $ | 633 |  |  | $ | (37 | ) |  | $ | 10,154 |
See report of independent registered public accounting firm.

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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 SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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