Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Statement of Cash Flows [Abstract]
Net income (loss)	$ 22,094	$ 45,202
Bad debt expense	2,716	37
Deferred financing cost amortization	136	145
Depreciation and amortization	18,740	15,910
Loss (gain) on sale of assets	(70)	(24)
Non-cash compensation expense	2,897	2,745
Deferred income taxes	1,815	6,841
Accounts receivable	(60,879)	(10,686)
Inventories	(24,188)	(33,761)
Costs and estimated earnings in excess of billings	(15,339)	(2,025)
Prepaid expenses and other current assets	(13,412)	(6,062)
Other non-current assets	(1,974)	(275)
Accounts payable and accrued expenses	41,449	3,964
Billings in excess of costs and estimated earnings	8,911	11,496
Other non-current liabilities	(695)	1,642
Net cash provided by operating activities	(17,799)	35,149
Capital expenditures	(26,609)	(5,391)
Proceeds from sale of assets	175	166
Cash paid in conjunction with business combinations	(500)	(92,694)
Net cash used in investing activities	(26,934)	(97,919)
Borrowings of debt	1,383,745	947,057
Repayments of debt	(1,327,209)	(915,928)
Cash paid for finance leases	(1,055)	(423)
Distribution to noncontrolling interest	(6,352)	(311)
Purchase of treasury stock	(10,495)	(1,490)
Options exercised	53
Net cash used in financing activities	38,687	27,717
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(6,046)	(35,053)
CASH, CASH EQUIVALENTS, beginning of period		53,577
CASH, CASH EQUIVALENTS, end of period	17,059	18,524
Cash paid for interest	1,917	460
Cash paid for income taxes (net)	3,023	3,473
Payments for Repurchase of Redeemable Noncontrolling Interest	$ 0	$ (1,188)