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Business Acquisition (Schedule of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Jun. 30, 2019 | Oct. 01, 2018 | Sep. 30, 2018 | Jun. 01, 2018 | Sep. 30, 2017
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Business Acquisition [Line Items] |  |  |  |  |  |  |
Goodwill |  | $ 797,853 |  | $ 813,250 | $ 813,250 |  | $ 556,545
Fair value adjustment to inventory as of acquisition date |  |  |  |  |  | $ 16,324 |
Business Acquisition, Acquiree - L'Orange [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Accounts receivable |  |  | $ 26,538 |  |  |  |
Inventories | [1] |  | 72,392 |  |  |  |
Other current assets |  |  | 1,385 |  |  |  |
Property, plant, and equipment |  |  | 89,772 |  |  |  |
Goodwill |  |  | 257,447 |  |  |  |
Intangible assets |  | $ 573,427 | 573,427 |  |  |  |
Total assets acquired |  |  | 1,020,961 |  |  |  |
Other current liabilities |  |  | 41,997 |  |  |  |
Deferred income tax liabilities |  |  | 166,927 |  |  |  |
Other noncurrent liabilities |  |  | 40,922 |  |  |  |
Total liabilities assumed |  |  | 249,846 |  |  |  |
Net assets acquired |  |  | $ 771,115 |  |  |  |
[1] | Inventories include a $16,324 adjustment to state work in progress and finished goods inventories at their fair value as of the acquisition date. The entire inventory fair value adjustment was recognized as a noncash increase to cost of goods sold ratably over the estimated inventory turnover period during the fiscal year ended September 30, 2018.

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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