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Business Segment Information - Product Sales Excluding All Other Category (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 24, 2018	Mar. 25, 2018	Dec. 24, 2017	Sep. 24, 2017	Jun. 25, 2017	Mar. 26, 2017	Dec. 25, 2016	Sep. 25, 2016	Jun. 24, 2018	Jun. 25, 2017	Jun. 26, 2016
Segment Reporting Information [Line Items]
Total product sales	$ 181,325	$ 165,867	$ 167,478	$ 164,242	$ 171,250	$ 160,896	$ 155,155	$ 159,969	$ 678,912	$ 647,270	$ 643,637
Polyester [Member]
Segment Reporting Information [Line Items]
Total product sales									572,053	529,426	505,721
Nylon [Member]
Segment Reporting Information [Line Items]
Total product sales									102,639	112,704	131,715
Product sales (excluding the All Other category) [Member]
Segment Reporting Information [Line Items]
Total product sales									$ 674,692	$ 642,130	$ 637,436

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-Paragraph 32
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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