Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Cash Flows [Abstract]
Net income (loss)	$ 52,926	$ 11,029
Bad debt expense	330	92
Deferred financing cost amortization	132	88
Depreciation and amortization	13,252	12,370
Gain (Loss) on Disposition of Property Plant Equipment	(13,162)	(73)
Gain (Loss) on Sale of Investments [Abstract]
Non-cash compensation expense	1,956	1,898
Deferred income taxes	6,955	1,931
Accounts receivable	35,660	(22,830)
Inventories	(11,798)	(17,325)
Costs and estimated earnings in excess of billings	4,120	(12,128)
Prepaid expenses and other current assets	(11,672)	(3,795)
Other non-current assets	1,728	(1,968)
Accounts payable and accrued expenses	(30,454)	26,911
Billings in excess of costs and estimated earnings	10,109	1,134
Other non-current liabilities	(23)	(242)
Net cash provided by operating activities	60,059	(2,908)
Capital expenditures	(6,677)	(21,627)
Proceeds from sale of assets	19,124	199
Cash paid in conjunction with business combinations	(165)	(500)
Net cash used in investing activities	12,282	(21,928)
Borrowings of debt	1,162,971	872,609
Repayments of debt	(1,230,519)	(842,727)
Cash paid for finance leases	(1,617)	(603)
Distribution to noncontrolling interest	(5,272)	(3,344)
Purchase of treasury stock	(7,637)	(4,925)
Options exercised	14	0
Net cash used in financing activities	(82,060)	21,010
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(9,719)	(3,826)
CASH, CASH EQUIVALENTS, beginning of period	24,848	23,105
CASH, CASH EQUIVALENTS, end of period	15,129	19,279
Cash paid for interest	1,765	949
Cash paid for income taxes (net)	$ 4,660	$ 2,142