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Note 2 - Trade Accounts Receivable

12 Months Ended

Dec. 31, 2013

Receivables [Abstract]

Financing Receivables [Text Block]

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 collectability. Accounts receivable balances consist of the following components as of December 31, 2013 and 2012:

		2013				2012
		(in thousands)

Billed		$	50,168			$	44,374
Unbilled			9,793				6,800
Allowance for doubtful accounts			(1,477	)			(1,157	)

Total accounts receivable—net		$	58,484			$	50,017

An analysis of changes in the allowance for doubtful accounts for the years ended December 31, 2013, 2012 and 2011 follows:

		2013				2012				2011
		(in thousands)

Balance—beginning of year		$	1,157			$	2,074			$	2,418
Provision for bad debts			424				191				22
Charge-offs			(104	)			(1,108	)			(565	)
Recoveries			-				-				199

Balance—end of year		$	1,477			$	1,157			$	2,074