Other Financial Data - Schedule of Balance Sheet Information (Details) - USD ($) $ in Thousands	Jan. 01, 2023	Jul. 03, 2022
Receivables, net:
Customer receivables	$ 61,960	$ 99,963
Allowance for uncollectible accounts	(1,378)	(1,498)
Reserves for quality claims	(1,294)	(860)
Net customer receivables	59,288	97,605
Banker's acceptance notes	4,439	7,849
Other receivables	1,253	1,111
Total receivables, net	64,980	106,565
Inventories:
Raw materials	58,788	69,994
Supplies	11,805	11,953
Work in process	6,879	10,358
Finished goods	73,916	84,477
Gross inventories	151,388	176,782
Net realizable value adjustment	(4,135)	(3,487)
Total inventories	147,253	173,295
Other current assets:
Prepaid expenses and other	3,647	3,004
Value-added taxes receivable	3,433	1,987
Vendor deposits	2,874	6,910
Recovery of non-income taxes, net	2,801	6,770
Contract assets	448	285
Total other current assets	13,203	18,956
Property, plant and equipment, net:
Gross property, plant and equipment	894,794	886,811
Less: accumulated depreciation	(663,885)	(666,569)
Less: accumulated amortization – finance leases	(4,630)	(3,904)
Total property, plant and equipment, net	226,279	216,338
Other non-current assets:
Recovery of taxes	5,131	1,463
Grantor trust	2,897	2,196
Investments in unconsolidated affiliates	2,430	2,072
Intangible assets, net	1,813	2,500
Other	951	557
Total other non-current assets	13,222	8,788
Other current liabilities:
Payroll and fringe benefits	4,725	9,414
Utilities	1,306	2,287
Deferred revenue	1,306	1,694
Incentive compensation	445	3,916
Property taxes and other	3,563	2,495
Total other current liabilities	11,345	19,806
Other long-term liabilities:
Nonqualified deferred compensation plan obligation	2,355	1,982
Uncertain tax positions	1,879	1,575
Other	526	892
Total other long-term liabilities	4,760	4,449
Land
Property, plant and equipment, net:
Gross property, plant and equipment	3,150	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	165,905	164,252
Assets Held Under Finance Leases
Property, plant and equipment, net:
Gross property, plant and equipment	11,498	10,921
Machinery and Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	637,855	635,699
Computers Software And Office Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	25,883	25,348
Transportation Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	10,455	10,591
Asset under Construction
Property, plant and equipment, net:
Gross property, plant and equipment	$ 23,605	$ 20,397