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TRADE ACCOUNTS RECEIVABLE | 12 Months Ended
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Dec. 31, 2012
TRADE ACCOUNTS RECEIVABLE [Abstract] |
TRADE ACCOUNTS RECEIVABLE | 2. TRADE ACCOUNTS RECEIVABLE The Company's receivables result primarily from the sale of transportation and logistics services. The Company performs ongoing credit evaluations of its customers and generally does not require collateral for accounts receivable. Accounts receivable which consist of both billed and unbilled receivables are presented net of an allowance for doubtful accounts. Accounts outstanding longer than contractual payment terms are considered past due and are reviewed individually for collectibility. Accounts receivable balances consist of the following components as of December 31, 2012 and 2011:
|  | 2012 |  |  | 2011 |
|  | (in thousands) |
Billed |  | $ | 44,374 |  |  | $ | 44,370 |
Unbilled |  |  | 6,800 |  |  |  | 5,723 |
Allowance for doubtful accounts |  |  | (1,157 | ) |  |  | (2,074 | )
Total accounts receivable—net |  | $ | 50,017 |  |  | $ | 48,019 |
An analysis of changes in the allowance for doubtful accounts for the years ended December 31, 2012, 2011 and 2010 follows:
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | (in thousands) |
Balance—beginning of year |  | $ | 2,074 |  |  | $ | 2,418 |  |  | $ | 2,660 |
Provision for bad debts |  |  | (285 | ) |  |  | 22 |  |  |  | 529 |
Charge-offs |  |  | (632 | ) |  |  | (565 | ) |  |  | (1,100 | )
Recoveries |  |  | - |  |  |  | 199 |  |  |  | 329 |
Balance—end of year |  | $ | 1,157 |  |  | $ | 2,074 |  |  | $ | 2,418 |

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- Definition The entire disclosure for trade account receivables. + References No definition available. + Details
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