XML 52 R41.htm IDEA: XBRL DOCUMENT v3.24.3
Note 6 - Investment in Foreign Joint Venture (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Revenue from Contract with Customer, Excluding Assessed Tax $ 17,627 $ 15,316 $ 55,995 $ 55,065  
Accretion (Amortization) of Discounts and Premiums, Investments     97 97  
Affiliated Entity [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax $ 0 $ 0 $ 0 $ 0  
Bomay [Member]          
Equity Method Investment, Ownership Percentage 40.00%   40.00%    
Equity Method Investment, Summarized Financial Information Accumulated Statutory Reserve $ 2,700   $ 2,700   $ 2,700
Equity Method Investment, Remaining Life of Joint Venture (Year)     9 years    
Bomay [Member] | Baoji Oilfield Machinery Co Ltd [Member]          
Equity Method Investment, Ownership Percentage 51.00%   51.00%    
Bomay [Member] | A A Energies Inc [Member]          
Equity Method Investment, Ownership Percentage 9.00%   9.00%