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Business Segment Information - Selected Financial Information for Polyester, Nylon, International and Other Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 30, 2018	Dec. 24, 2017	Dec. 30, 2018	Dec. 24, 2017
Segment Reporting Information [Line Items]
Net sales	$ 167,711	$ 167,478	$ 349,322	$ 331,720
Cost of sales	153,555	144,802	315,147	285,752
Gross profit	14,156	22,676	34,175	45,968
Segment depreciation expense	4,871	4,986	10,118	9,871
Segment Profit	19,027	27,662	44,293	55,839
Polyester [Member]
Segment Reporting Information [Line Items]
Net sales	85,789	90,316	185,920	178,054
Cost of sales	83,820	81,740	177,223	160,565
Gross profit	1,969	8,576	8,697	17,489
Segment depreciation expense	3,937	3,973	8,189	7,840
Segment Profit	5,906	12,549	16,886	25,329
Nylon [Member]
Segment Reporting Information [Line Items]
Net sales	22,647	25,103	50,596	51,930
Cost of sales	20,615	22,027	46,420	45,540
Gross profit	2,032	3,076	4,176	6,390
Segment depreciation expense	499	552	1,060	1,089
Segment Profit	2,531	3,628	5,236	7,479
International [Member]
Segment Reporting Information [Line Items]
Net sales	58,237	51,046	110,590	99,705
Cost of sales	48,161	40,072	89,491	77,733
Gross profit	10,076	10,974	21,099	21,972
Segment depreciation expense	367	397	726	813
Segment Profit	10,443	11,371	21,825	22,785
Other Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,038	1,013	2,216	2,031
Cost of sales	959	963	2,013	1,914
Gross profit	79	50	203	117
Segment depreciation expense	68	64	143	129
Segment Profit	$ 147	$ 114	$ 346	$ 246

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