CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE

3 Months Ended

Mar. 31, 2014

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE

(4) CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE

        Our primary market areas are located in the United States along the Gulf Coast, in the Southeast, in Brownsville, Texas, along the Mississippi and Ohio Rivers, and in the Midwest. We have a concentration of trade receivable balances due from companies engaged in the trading, distribution and marketing of refined products and crude oil and the United States government. These concentrations of customers may affect our overall credit risk in that the customers may be similarly affected by changes in economic, regulatory or other factors. Our customers' historical financial and operating information is analyzed prior to extending credit. We manage our exposure to credit risk through credit analysis, credit approvals, credit limits and monitoring procedures, and for certain transactions we may request letters of credit, prepayments or guarantees. We maintain allowances for potentially uncollectible accounts receivable.

        Trade accounts receivable, net consists of the following (in thousands):

	March 31, 2014			December 31, 2013
Trade accounts receivable	$	7,556		$	6,527
Less allowance for doubtful accounts		(464	)		(100	)
	$	7,092		$	6,427

        The following customer accounted for at least 10% of our consolidated revenue in at least one of the periods presented in the accompanying consolidated statements of comprehensive income:

	Three months ended March 31,
	2014			2013
Morgan Stanley Capital Group		62	%		62	%