Note 1 - Basis of Presentation - Current Ownership Hierarchy (Details) |
9 Months Ended |
---|---|
Sep. 30, 2019 | |
Heat Waves Hot Oil Service LLC at Colorado [Member] | |
Subsidiary or Equity Method Investee | 100.00% |
Adler Hot Oil Service, LLC [Member] | |
Subsidiary or Equity Method Investee | 100.00% |
Heat Waves Water Management LLC at Colorado [Member] | |
Subsidiary or Equity Method Investee | 100.00% |
Dillco Fluid Service, Inc. at Kansas [Member] | |
Subsidiary or Equity Method Investee | 100.00% |
HE Services LLC at Nevada [Member] | |
Subsidiary or Equity Method Investee | 100.00% |