Unaudited Consolidated Statements of Changes in Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities
Net income	$ 31,025	$ 24,758
Reconciliation of net income to cash flows provided by operating activities:
Depreciation and amortization	93,881	83,707
Amortization of deferred financing fees (includes $0 and $1,333 write off of deferred financing fees)	1,393	2,814
Deferred income taxes	1,332	994
Share-based compensation	16,339	10,461
(Gain) loss on sale of property, plant, and equipment	(684)	2,456
(Gain) loss on sale of business	(193)	193
Foreign currency exchange losses (gains) on intercompany loans and other non-cash items	11,235	(4,628)
Changes in assets and liabilities
Accounts receivable	3,222	18,931
Inventories	(44,566)	(18,261)
Contract assets	(30,092)	12,059
Prepaids and other current assets	(23,951)	(21,869)
Accounts payable	27,367	(10,587)
Accrued expenses and other liabilities	2,494	23,065
Contract liabilities	11,356	9,337
Income taxes	1,596	(2,489)
Other non‑current assets and liabilities	(14,820)	(28,083)
Net cash provided by operating activities	86,934	102,858
Investing activities
Purchase of property, plant, and equipment	(58,700)	(54,147)
Purchase of intangibles	(2,361)	(1,206)
Proceeds from sale of property, plant, and equipment	2,383	1,108
Proceeds from sale of business, net of cash of $0 and $0	356	897
Acquisitions, net of cash received $0 and $0	(206,471)	(21,059)
Net cash used in investing activities	(264,793)	(74,407)
Financing activities
Issuance of debt, net of deferred issuance costs	245,236	747,877
Repayment of debt	(64,007)	(837,082)
Repayment of finance lease obligation	(9,965)	(10,173)
Proceeds from issuance of common stock	7,921	18,096
Taxes paid related to net share settlements of share-based compensation awards	(6,274)	(1,315)
Distribution to non‑controlling interest	(100)	(450)
Net cash provided by (used in) financing activities	172,811	(83,047)
Effect of exchange rate changes on cash	(3,357)	3,119
Change in cash and cash equivalents	(8,405)	(51,477)
Beginning of period	146,244	193,001
End of period	137,839	141,524
Supplemental disclosure of cash flow information
Cash paid for taxes	5,544	7,536
Cash paid for interest	19,076	20,643
Non‑cash investing and financing activities
Finance lease transactions	10,404	12,300
Operating lease transactions	$ 18,482	$ 11,699