Unaudited Condensed Consolidated Statements of Changes in Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities
Net loss	$ 9,975	$ (8,305)
Reconciliation of net loss to cash flows from operating activities:
Depreciation and amortization	40,363	37,520
Amortization of deferred financing costs (includes $2,075 and $2,994 write off of deferred financing fees)	4,145	4,576
Deferred income taxes	(6,013)	(11,015)
Share-based compensation	6,862	1,020
(Gain) loss on sale of property, plant and equipment	102	(446)
Foreign currency losses (gains) on intracompany loans	(2,934)	5,095
Changes in assets and liabilities
Accounts receivable	28,946	(5,093)
Inventories	(14,936)	(8,826)
Cost and earnings in excess of billings on uncompleted contracts	(7,848)	1,401
Prepaids and other current assets	(5,156)	(1,090)
Accounts payable	22,821	(1,552)
Accrued expenses and other liabilities	(30,810)	(13,152)
Billings in excess of costs incurred	(2,032)	(1,205)
Income taxes	1,849	(3,497)
Other non‑current assets and liabilities	(3,483)	4,223
Net cash (used in) provided by operating activities	41,851	(346)
Investing activities
Purchase of property, plant and equipment	(31,670)	(27,229)
Purchase of intangibles	(291)	(410)
Proceeds from sale of property, plant and equipment	539	425
Acquisitions, net of cash acquired of $0 and $39	(10,224)	(10,730)
Net cash used in investing activities	(41,646)	(37,944)
Financing activities
Issuance of debt	0	150,000
Capitalized deferred issuance costs related to refinancing	(1,792)	(4,198)
Borrowings under credit facility	6,000	33,000
Repayment of debt	(111,161)	(132,738)
Repayment of capital lease obligation	(5,489)	(2,656)
Proceeds from issuance of common stock	137,605	4,151
Taxes paid related to net share settlements of share-based compensation awards	(7,368)	0
Stock repurchases	(230)	(543)
Distribution to non‑controlling interest	(1,550)	(3,500)
Net cash provided by financing activities	16,015	43,516
Effect of exchange rate changes on cash	268	(586)
Change in cash and cash equivalents	16,488	4,640
Cash and cash equivalents
Beginning of period	59,254	50,362
End of period	75,742	55,002
Supplemental disclosure of cash flow information
Cash paid for taxes	2,077	1,759
Cash paid for interest	20,503	20,704
Non‑cash investing and financing activities
Accrued earnout related to acquisitions	461	0
Capital lease transactions	$ 3,948	$ 7,054