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Note 8 - Major Customers
3 Months Ended
Mar. 31, 2015
Notes to Financial Statements  
Major Customers [Text Block]
8.
    MAJOR CUSTOMERS
 
During the three months ended March 31, 2015, the Company’s three largest commercial customers accounted for 21%, 19% and 15% of revenue, respectively. During the three months ended March 31, 2014, the Company’s three largest commercial customers accounted for 28%, 24% and 17% of revenue, respectively. In addition, during the three months ended March 31, 2015 and 2014, 0.6% and 1%, respectively, of revenue was directly from the U.S. Government.
 
At March 31, 2015, 26%, 23%, 13% and 10% of Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts were from the Company’s four largest commercial customers. At December 31, 2014, 27%, 25%, 13% and 8% of Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts were from the Company’s four largest commercial customers.
 
At March 31, 2015 and December 31, 2014, less than 1% of Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts were directly from the U.S. Government.
 
At March 31, 2015, 27%, 22% and 14% of our accounts receivable were from our three largest commercial customers. At December 31, 2014, 26%, 21% and 15% of accounts receivable were from our three largest commercial customers.