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Relationship with Major Customers
12 Months Ended
Dec. 31, 2017
Risks and Uncertainties [Abstract]  
Relationship with Major Customers
Relationship with Major Customers
During the years ended December 31, 2017 and 2016, approximately 48% and 41%, respectively, of our consolidated revenues were attributable to contracts with the U.S. government.
At December 31, 2017 and 2016, receivables with respect to contracts with the U.S. government represented 20% and 14% of total trade receivables, respectively.