Business Combinations - Pro Forma Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Basic (in shares)	13,306
Diluted (in shares)	14,276	14,295
Grove Resource Solutions, LLC
Business Acquisition [Line Items]
Revenue	$ 99,823	$ 178,854
Net income (loss)	$ 2,181	$ 6,857
Basic (in shares)	13,306	12,749
Diluted (in shares)	14,276	14,295
Basic earnings per share (loss) (in dollars per share)	$ 0.16	$ 0.54
Diluted earnings per share (loss) (in dollars per share)	$ 0.15	$ 0.48