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REVENUE AND CONTRACT LIABILITIES (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Mar. 28, 2020 | Mar. 30, 2019 | Mar. 28, 2020 | Mar. 30, 2019
Change in Contract with Customer, Liability [Roll Forward] |  |  |  |
Contract liabilities, beginning of period | $ 2,588 | $ 548 | $ 1,896 | $ 997
Revenue recognized | 2,459 | 2,339 | 5,817 | 5,517
Additions | 10,229 | 2,372 | 14,279 | 5,101
Contract liabilities, end of period | $ 10,358 | $ 581 | $ 10,358 | $ 581

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 + Details
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- Definition Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in measure of progress which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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