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CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Details) - Summary of consolidated cash flows - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net income | $ 37,287,000 | $ 125,678,000 | $ 14,912,000
Net (income) loss from discontinued operations | 8,335,000 | (92,423,000) | 2,871,000
Net cash provided by (used in) operating activities | 113,958,000 | 58,192,000 | 49,151,000
CASH FLOWS FROM INVESTING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Acquisition of property, plant and equipment | (45,361,000) | (50,138,000) | (34,937,000)
Acquired business, net of cash acquired | (9,219,000) | (430,932,000) | (34,719,000)
Proceeds (payments) from sale of business | (9,500,000) | 474,727,000 | 0
Insurance proceeds | (10,604,000) | 8,254,000 | 0
Proceeds from sale of property, plant and equipment | 280,000 | 663,000 | 143,000
Proceeds from sale of property, plant and equipment | (149,000) | 0 | (1,824,000)
Net cash provided by (used in) investing activities - continuing operations | (74,553,000) | 2,574,000 | (71,337,000)
CASH FLOWS FROM FINANCING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Purchase of shares for treasury | (1,478,000) | (45,605,000) | (15,841,000)
Proceeds from long-term debt | 201,748,000 | 443,058,000 | 233,443,000
Payments of long-term debt | (218,248,000) | (300,993,000) | (170,454,000)
Share premium payment on settled debt | 0 | 0 | (24,997,000)
Change in short-term borrowings | (366,000) | 144,000 | 0
Financing costs | (1,090,000) | (7,793,000) | (1,548,000)
Purchase of ESOP shares | 0 | 0 | (10,908,000)
Tax effect from exercise/vesting of equity awards, net | (1,686,000) |  | 10,908,000
Dividends | (13,676,000) | (49,797,000) | (10,325,000)
Other, net | (180,000) | 51,000 | (70,000)
Net cash provided by (used) in financing activities - continuing operations | (34,976,000) | 39,065,000 | (700,000)
CASH FLOWS FROM DISCONTINUED OPERATIONS: |  |  |
Net cash used in discontinued operations | (2,123,000) | (78,927,000) | (2,150,000)
Effect of exchange rate changes on cash and equivalents | 313,000 | 1,173,000 | 164,000
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS | 2,619,000 | 22,077,000 | (24,872,000)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD | 69,758,000 | 47,681,000 | 72,553,000
CASH AND EQUIVALENTS AT END OF PERIOD | 72,377,000 | 69,758,000 | 47,681,000
Parent Company [Member] |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net income | 37,287,000 | 125,678,000 | 14,912,000
Net (income) loss from discontinued operations | 0 | 0 | 0
Net cash provided by (used in) operating activities | 42,159,000 | 381,417,000 | (10,771,000)
CASH FLOWS FROM INVESTING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Acquisition of property, plant and equipment | (542,000) | (544,000) | (15,000)
Acquired business, net of cash acquired | (9,219,000) | (368,936,000) | 0
Proceeds (payments) from sale of business | (9,500,000) | 0 |
Insurance proceeds | (10,604,000) | 8,254,000 |
Proceeds from sale of property, plant and equipment | 0 | 0 | 0
Proceeds from sale of property, plant and equipment | (149,000) |  | (1,824,000)
Net cash provided by (used in) investing activities - continuing operations | (30,014,000) | (361,226,000) | (1,839,000)
CASH FLOWS FROM FINANCING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Purchase of shares for treasury | (1,478,000) | (45,605,000) | (15,841,000)
Proceeds from long-term debt | 163,297,000 | 411,623,000 | 201,124,000
Payments of long-term debt | (173,345,000) | (269,478,000) | (149,109,000)
Share premium payment on settled debt |  |  | (24,997,000)
Change in short-term borrowings | 0 | 0 |
Financing costs | (1,090,000) | (7,793,000) | (1,548,000)
Tax effect from exercise/vesting of equity awards, net | 0 |  | 10,908,000
Dividends | (13,676,000) | (49,797,000) | (10,325,000)
Other, net | (180,000) | (46,405,000) | 20,937,000
Net cash provided by (used) in financing activities - continuing operations | (26,472,000) | (7,455,000) | 9,333,000
CASH FLOWS FROM DISCONTINUED OPERATIONS: |  |  |
Net cash used in discontinued operations | 0 | 0 | 0
Effect of exchange rate changes on cash and equivalents | 0 | 0 | 0
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS | (14,327,000) | 12,736,000 | (3,277,000)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD | 15,976,000 | 3,240,000 | 6,517,000
CASH AND EQUIVALENTS AT END OF PERIOD | 1,649,000 | 15,976,000 | 3,240,000
Guarantor Subsidiaries [Member] |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net income | 94,637,000 | 122,687,000 | 24,889,000
Net (income) loss from discontinued operations | 0 | (92,423,000) | (12,351,000)
Net cash provided by (used in) operating activities | 41,992,000 | (405,174,000) | 56,320,000
CASH FLOWS FROM INVESTING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Acquisition of property, plant and equipment | (38,872,000) | (41,531,000) | (27,902,000)
Acquired business, net of cash acquired | 0 | (4,843,000) | 0
Proceeds (payments) from sale of business | 0 | 474,727,000 |
Insurance proceeds | 0 | 0 |
Proceeds from sale of property, plant and equipment | 254,000 | 62,000 | 144,000
Proceeds from sale of property, plant and equipment | 0 |  | 0
Net cash provided by (used in) investing activities - continuing operations | (38,618,000) | 428,415,000 | (27,758,000)
CASH FLOWS FROM FINANCING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Purchase of shares for treasury | 0 | 0 | 0
Proceeds from long-term debt | 0 | 2,125,000 | 0
Payments of long-term debt | (2,973,000) | (5,403,000) | (1,282,000)
Share premium payment on settled debt |  |  | 0
Change in short-term borrowings | (366,000) | 144,000 |
Financing costs | 0 | 0 | 0
Tax effect from exercise/vesting of equity awards, net | 0 |  | 0
Dividends | 0 | 0 | 0
Other, net | 8,830,000 | 4,733,000 | (34,806,000)
Net cash provided by (used) in financing activities - continuing operations | 5,491,000 | 1,599,000 | (36,088,000)
CASH FLOWS FROM DISCONTINUED OPERATIONS: |  |  |
Net cash used in discontinued operations | 0 | (16,394,000) | (12,100,000)
Effect of exchange rate changes on cash and equivalents | (1,000) | (159,000) | 0
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS | 8,864,000 | 8,287,000 | (19,626,000)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD | 16,353,000 | 8,066,000 | 27,692,000
CASH AND EQUIVALENTS AT END OF PERIOD | 25,217,000 | 16,353,000 | 8,066,000
Non-Guarantor Subsidiaries [Member] |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net income | 81,089,000 | 84,680,000 | 47,242,000
Net (income) loss from discontinued operations | 8,335,000 | 0 | 15,222,000
Net cash provided by (used in) operating activities | 29,807,000 | 108,981,000 | 3,602,000
CASH FLOWS FROM INVESTING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Acquisition of property, plant and equipment | (5,947,000) | (8,063,000) | (7,020,000)
Acquired business, net of cash acquired | 0 | (57,153,000) | (34,719,000)
Proceeds (payments) from sale of business | 0 | 0 |
Insurance proceeds | 0 | 0 |
Proceeds from sale of property, plant and equipment | 26,000 | 601,000 | (1,000)
Proceeds from sale of property, plant and equipment | 0 |  | 0
Net cash provided by (used in) investing activities - continuing operations | (5,921,000) | (64,615,000) | (41,740,000)
CASH FLOWS FROM FINANCING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Purchase of shares for treasury | 0 | 0 | 0
Proceeds from long-term debt | 38,451,000 | 29,310,000 | 32,319,000
Payments of long-term debt | (41,930,000) | (26,112,000) | (20,063,000)
Share premium payment on settled debt |  |  | 0
Change in short-term borrowings | 0 | 0 |
Financing costs | 0 | 0 | 0
Tax effect from exercise/vesting of equity awards, net | (1,686,000) |  | 0
Dividends | 0 | 0 | 0
Other, net | (8,830,000) | 14,691,000 | 13,799,000
Net cash provided by (used) in financing activities - continuing operations | (13,995,000) | 17,889,000 | 26,055,000
CASH FLOWS FROM DISCONTINUED OPERATIONS: |  |  |
Net cash used in discontinued operations | (2,123,000) | (62,533,000) | 9,950,000
Effect of exchange rate changes on cash and equivalents | 314,000 | 1,332,000 | 164,000
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS | 8,082,000 | 1,054,000 | (1,969,000)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD | 37,429,000 | 36,375,000 | 38,344,000
CASH AND EQUIVALENTS AT END OF PERIOD | 45,511,000 | 37,429,000 | 36,375,000
Consolidation, Eliminations [Member] |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net income | (175,726,000) | (207,367,000) | (72,131,000)
Net (income) loss from discontinued operations | 0 | 0 | 0
Net cash provided by (used in) operating activities | 0 | (27,032,000) | 0
CASH FLOWS FROM INVESTING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Acquisition of property, plant and equipment | 0 | 0 | 0
Acquired business, net of cash acquired | 0 | 0 | 0
Proceeds (payments) from sale of business | 0 | 0 |
Insurance proceeds | 0 | 0 |
Proceeds from sale of property, plant and equipment | 0 | 0 | 0
Proceeds from sale of property, plant and equipment | 0 |  | 0
Net cash provided by (used in) investing activities - continuing operations | 0 | 0 | 0
CASH FLOWS FROM FINANCING ACTIVITIES - CONTINUING OPERATIONS: |  |  |
Purchase of shares for treasury | 0 | 0 | 0
Proceeds from long-term debt | 0 | 0 | 0
Payments of long-term debt | 0 | 0 | 0
Share premium payment on settled debt |  |  | 0
Change in short-term borrowings | 0 | 0 |
Financing costs | 0 | 0 | 0
Tax effect from exercise/vesting of equity awards, net | 0 |  | 0
Dividends | 0 | 0 | 0
Other, net | 0 | 27,032,000 | 0
Net cash provided by (used) in financing activities - continuing operations | 0 | 27,032,000 | 0
CASH FLOWS FROM DISCONTINUED OPERATIONS: |  |  |
Net cash used in discontinued operations | 0 | 0 | 0
Effect of exchange rate changes on cash and equivalents | 0 | 0 | 0
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS | 0 | 0 | 0
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD | 0 | 0 | 0
CASH AND EQUIVALENTS AT END OF PERIOD | $ 0 | $ 0 | $ 0

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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition The cash outflow for loan and debt issuance costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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