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11. SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK
12 Months Ended
Dec. 31, 2013
Fair Value Disclosures [Abstract]  
SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK

In 2013, three customers accounted for 46%, 13% and 12% of operating revenues and one customer accounted for 89% of accounts receivable at December 31, 2013.  In 2012, three customers accounted for 43%, 21% and 19% of operating revenues and two customers accounted for 80% and 10% of accounts receivable at December 31, 2012.