XML 67 R57.htm IDEA: XBRL DOCUMENT v3.23.2
Note 8 - Investment in Joint Ventures (Details Textual)
Jun. 30, 2023
CETS [Member]  
Equity Method Investment, Ownership Percentage 50.00%
PVD-Expro [Member]  
Equity Method Investment, Ownership Percentage 49.00%