XML 47 R36.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Note 5 - Investment in Foreign Joint Venture (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Revenue from Contract with Customer, Excluding Assessed Tax $ 19,770 $ 26,842  
Accretion (Amortization) of Discounts and Premiums, Investments 32 32  
Affiliated Entity [Member]      
Revenue from Contract with Customer, Excluding Assessed Tax $ 0 $ 0  
Bomay [Member]      
Equity Method Investment, Ownership Percentage 40.00%    
Equity Method Investment, Summarized Financial Information Accumulated Statutory Reserve $ 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%    
Bomay [Member] | A A Energies Inc [Member]      
Equity Method Investment, Ownership Percentage 9.00%