Note 17 - Contingencies - Legal Proceedings (Details Textual) - Steadfast Insurance Company (“Steadfast”), a subrogee of Clark/Hathaway Dinwiddie, a Joint Venture (“CHDJV”) v. Layne Christensen Company [Member] - USD ($) $ in Millions	Feb. 04, 2022	Feb. 03, 2022
Potential Legal Action Not Yet Taken Against the Company [Member]
Loss Contingency, Estimate of Possible Loss	$ 100
Steadfast [Member]
Loss Contingency, Damages Sought, Value		$ 70
CHDJV [Member]
Loss Contingency, Damages Sought, Value	$ 30