SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, RISKS AND UNCERTAINTIES - Narrative (Details) - USD ($)	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Mar. 31, 2020	Sep. 30, 2022	Sep. 30, 2021
Summary Of Significant Accounting Policies [Line Items]
Restricted cash and cash equivalents	$ 42,500,000	$ 18,500,000		$ 36,900,000	$ 19,200,000
Additional cash and cash equivalents restricted at the election of management for potential insurance claims	41,800,000			35,800,000
Underwriting expenses	2,900,000	2,200,000
Casualty insurance premiums	10,000,000	8,800,000
Premium revenues and expenses	16,400,000	13,600,000
Stop-loss program, maximum amount of claim			$ 50,000
Stop-loss medical expenses	$ 2,800,000	3,200,000
Cumulative inflation rate before a country is considered highly inflationary	100.00%
Foreign currency losses	$ 200,000	$ 1,000,000
International Locations | Geographic Concentration Risk | Operating Revenues
Summary Of Significant Accounting Policies [Line Items]
Concentration percentage	7.70%	9.30%
Argentina
Summary Of Significant Accounting Policies [Line Items]
Cash	$ 19,700,000
South America | International Locations | Geographic Concentration Risk | Segment Revenue | International Solutions Segment
Summary Of Significant Accounting Policies [Line Items]
Concentration percentage	90.50%	77.10%
Acquisition of Drilling Technologies Companies
Summary Of Significant Accounting Policies [Line Items]
Restricted cash and cash equivalents	$ 700,000			$ 1,100,000