Other Financial Data - Schedule of Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Jul. 02, 2023
Receivables, net:
Customer receivables	$ 77,320	$ 79,174
Allowance for uncollectible accounts	(2,488)	(1,362)
Reserves for quality claims	(750)	(682)
Net customer receivables	74,082	77,130
Banker's acceptance notes	3,963	5,870
Other receivables	886	725
Total receivables, net	78,931	83,725
Inventories:
Raw materials	57,232	59,983
Supplies	11,964	11,787
Work in process	8,800	6,633
Finished goods	60,955	78,032
Gross inventories	138,951	156,435
Net realizable value adjustment	(4,826)	(5,625)
Total inventories	134,125	150,810
Other current assets:
Vendor deposits	3,463	3,863
Prepaid expenses and other	2,858	2,584
Value-added taxes receivable	2,628	3,398
Contract assets	511	549
Recovery of non-income taxes, net		1,933
Total other current assets	9,460	12,327
Property, plant and equipment, net:
Gross property, plant and equipment	904,604	906,739
Less: accumulated depreciation	(692,949)	(682,768)
Less: accumulated amortization – finance leases	(6,860)	(5,450)
Total property, plant and equipment, net	204,795	218,521
Other non-current assets:
Recovery of taxes	6,072	5,957
Grantor trust	2,891	2,496
Investments in unconsolidated affiliates	1,537	2,997
Intangible assets, net	709	1,210
Other	2,193	1,848
Total other non-current assets	13,402	14,508
Other current liabilities:
Payroll and fringe benefits	8,060	6,981
Incentive compensation	2,200	298
Deferred revenue	2,090	1,441
Utilities	2,037	1,634
Severance	1,402
Property taxes, interest and other	3,384	2,578
Total other current liabilities	19,173	12,932
Other long-term liabilities:
Nonqualified deferred compensation plan obligation	1,958	2,659
Uncertain tax positions	1,074	1,973
Other	407	468
Total other long-term liabilities	3,439	5,100
Land
Property, plant and equipment, net:
Gross property, plant and equipment	2,501	2,512
Land Improvements
Property, plant and equipment, net:
Gross property, plant and equipment	16,445	16,443
Building and Building Improvements
Property, plant and equipment, net:
Gross property, plant and equipment	167,955	167,589
Assets Held Under Finance Leases
Property, plant and equipment, net:
Gross property, plant and equipment	18,030	16,397
Machinery and Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	659,235	656,431
Computers Software And Office Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	25,589	26,654
Transportation Equipment
Property, plant and equipment, net:
Gross property, plant and equipment	10,752	10,710
Asset under Construction
Property, plant and equipment, net:
Gross property, plant and equipment	$ 4,097	$ 10,003