Other Financial Data - Schedule of Balance Sheet Information (Details) - USD ($) $ in Thousands	Apr. 02, 2023	Jul. 03, 2022
Receivables, net:
Customer receivables	$ 84,599	$ 99,963
Allowance for uncollectible accounts	(1,356)	(1,498)
Reserves for quality claims	(834)	(860)
Net customer receivables	82,409	97,605
Banker's acceptance notes	4,579	7,849
Other receivables	980	1,111
Total receivables, net	87,968	106,565
Inventories:
Raw materials	50,681	69,994
Supplies	11,984	11,953
Work in process	8,860	10,358
Finished goods	75,637	84,477
Gross inventories	147,162	176,782
Net realizable value adjustment	(3,984)	(3,487)
Total inventories	143,178	173,295
Other current assets:
Vendor deposits	5,623	6,910
Value-added taxes receivable	3,881	1,987
Prepaid expenses and other	2,827	3,004
Recovery of non-income taxes, net	2,359	6,770
Contract assets	403	285
Total other current assets	15,093	18,956
Property, plant and equipment, net:
Gross property, plant and equipment	902,750	886,811
Less: accumulated depreciation	(668,540)	(666,569)
Less: accumulated amortization – finance leases	(5,015)	(3,904)
Total property, plant and equipment, net	229,195	216,338
Other non-current assets:
Recovery of taxes	5,492	1,463
Grantor trust	2,586	2,196
Investments in unconsolidated affiliates	2,504	2,072
Intangible assets, net	1,479	2,500
Other	925	557
Total other non-current assets	12,986	8,788
Other current liabilities:
Payroll and fringe benefits	8,415	9,414
Utilities	1,578	2,287
Deferred revenue	1,471	1,694
Incentive compensation	443	3,916
Property taxes and other	1,587	2,495
Total other current liabilities	13,494	19,806
Other long-term liabilities:
Nonqualified deferred compensation plan obligation	2,501	1,982
Uncertain tax positions	1,894	1,575
Other	516	892
Total other long-term liabilities	4,911	4,449
Land
Property, plant and equipment, net:
Gross property, plant and equipment	3,166	3,160
Land Improvements
Property, plant and equipment, net:
Gross property, plant and equipment	16,443	16,443
Building and Building Improvements
Property, plant and equipment, net:
Gross property, plant and equipment	166,675	164,252
Assets Held Under Finance Leases
Property, plant and equipment, net:
Gross property, plant and equipment	13,947	10,921
Machinery and Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	643,347	635,699
Computers Software And Office Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	26,213	25,348
Transportation Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	10,643	10,591
Asset under Construction
Property, plant and equipment, net:
Gross property, plant and equipment	$ 22,316	$ 20,397