Equity Earnings of Joint Ventures - Summarized Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 27, 2020	Sep. 29, 2019
Summarized statements of operations
Net sales	$ 126,234	$ 119,962
Cost of goods sold	103,723	104,076
Gross profit	22,511	15,886
Engineering, selling and administrative expenses	11,314	12,954
Income from operations	11,197	2,932
Other expense, net	(260)	(97)
Income before provision for income taxes and non-controlling interest	11,650	2,979
Provision for Income Taxes	1,577	299
Net income	10,073	2,680
Equity earnings of joint ventures	825	484
VAST LLC | Equity Method Investment Summarized Financial Information
Summarized statements of operations
Net sales	50,411	42,567
Cost of goods sold	40,591	34,658
Gross profit	9,820	7,909
Engineering, selling and administrative expenses	6,603	6,681
Income from operations	3,217	1,228
Other expense, net	(149)	860
Income before provision for income taxes and non-controlling interest	3,068	2,088
Provision for Income Taxes	592	628
Net income	2,476	1,460
Equity earnings of joint ventures	$ 825	$ 487