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Note 2 - Trade Accounts Receivable

12 Months Ended

Dec. 31, 2014

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, 2014 and 2013:

		2014				2013
		(in thousands)

Billed		$	49,302			$	50,168
Unbilled			5,292				9,793
Allowance for doubtful accounts			(1,611	)			(1,477	)

Total accounts receivable—net		$	52,983			$	58,484

An analysis of changes in the allowance for doubtful accounts for the years ended December 31, 2014, 2013, and 2012 follows:

		2014				2013				2012
		(in thousands)

Balance—beginning of year		$	1,477			$	1,157			$	2,074
Provision for bad debts			456				424				191
Charge-offs			(322	)			(104	)			(1,108	)
Balance—end of year		$	1,611			$	1,477			$	1,157