Unaudited Consolidated Statements of Changes in Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities
Net income	$ 24,758	$ 83,257
Reconciliation of net income to cash flows provided by operating activities:
Depreciation and amortization	83,707	80,056
Write off of Deferred Debt Issuance Cost	1,333	1,795
Amortization of deferred financing fees (includes $1,333 and $1,795 write off of deferred financing fees)	2,814	3,504
Deferred income taxes	994	(1,422)
Share-based compensation	10,461	8,504
Loss on sale of property, plant and equipment	2,456	767
Loss (gain) on sale of business		(68,051)
Foreign currency exchange gains on intercompany loans and other non-cash items	(4,628)	(2,438)
Changes in assets and liabilities
Accounts receivable	18,931	8,685
Inventories	(18,261)	(25,523)
Contract assets	12,059	(1,486)
Prepaids and other current assets	(21,869)	1,359
Accounts payable	(10,587)	8,938
Accrued expenses and other liabilities	23,065	(1,738)
Contract liabilities	9,337	(7,893)
Income taxes	(2,489)	1,620
Other non‑current assets and liabilities	(28,083)	12,528
Net cash provided by operating activities	102,858	100,667
Investing activities
Purchase of property, plant and equipment	(54,147)	(65,924)
Purchase of intangibles	(1,206)	(708)
Proceeds from sale of property, plant and equipment	1,108	379
Proceeds from sale of business, net of cash of $0 and $12,117		118,894
Acquisitions	(21,059)	(10,884)
Net cash (used in) provided by investing activities	(74,407)	41,757
Financing activities
Issuance of debt, net of deferred issuance costs	747,877	12,859
Borrowings under credit facility	0	2,597
Repayment of debt	(837,082)	(113,572)
Repayment of finance lease obligation	(10,173)	(9,988)
Payment of earn-out related to previous acquisitions	0	(175)
Proceeds from issuance of common stock	18,096	9,596
Taxes paid related to net share settlements of share-based compensation awards	(1,315)	(9,828)
Distribution to non‑controlling interest	(450)	(1,850)
Net cash used in financing activities	(83,047)	(110,361)
Effect of exchange rate changes on cash	3,119	793
Change in cash and cash equivalents	(51,477)	32,856
Cash and cash equivalents
Beginning of period	193,001	109,881
End of period	141,524	142,737
Supplemental disclosure of cash flow information
Cash paid for taxes	7,536	3,865
Cash paid for interest	20,643	31,200
Non‑cash investing and financing activities
Finance lease transactions	12,300	8,401
Operating lease transactions	11,699	12,085
Purchase Right	$ 0	$ 7,167