Note 7 - Concentrations (Details Textual) |
3 Months Ended | 9 Months Ended | |
---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
|
Number of Areas in Which Operations are Concentrated | 1 | ||
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | U.S. Government [Member] | |||
Concentration Risk, Percentage | 90.90% | 84.50% | |
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Three Government Customers [Member] | |||
Concentration Risk, Percentage | 75.80% | ||
Number of Major Customers | 3 | ||
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Four Government Customers [Member] | |||
Concentration Risk, Percentage | 66.40% | ||
Number of Major Customers | 4 | ||
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | One Commercial Customer [Member] | |||
Concentration Risk, Percentage | 14.50% | ||
Number of Major Customers | 1 |