Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 29, 2018	Mar. 30, 2017	Mar. 29, 2018	Mar. 30, 2017
Statement of Comprehensive Income [Abstract]
Net sales	$ 203,181	$ 173,376	$ 677,090	$ 645,044
Cost of sales	169,995	144,950	571,184	536,754
Gross profit	33,186	28,426	105,906	108,290
Operating expenses:
Selling expenses	11,626	10,299	38,415	36,940
Administrative expenses	7,457	7,163	21,803	23,022
Total operating expenses	19,083	17,462	60,218	59,962
Income from operations	14,103	10,964	45,688	48,328
Other expense:
Interest expense including $340, $198, $779 and $589 to related parties	1,004	864	2,590	2,094
Rental and miscellaneous expense, net	329	367	1,192	1,076
Other expense	492	534	1,477	1,600
Total other expense, net	1,825	1,765	5,259	4,770
Income before income taxes	12,278	9,199	40,429	43,558
Income tax expense	3,647	2,863	13,610	14,157
Net income	8,631	6,336	26,819	29,401
Other comprehensive income:
Amortization of prior service cost and actuarial loss included in net periodic pension cost	279	331	839	992
Income tax expense related to pension adjustments	(69)	(126)	(288)	(377)
Other comprehensive income, net of tax	210	205	551	615
Comprehensive income	$ 8,841	$ 6,541	$ 27,370	$ 30,016
Net income per common share-basic	$ 0.76	$ 0.56	$ 2.36	$ 2.60
Net income per common share-diluted	$ 0.75	$ 0.55	2.34	2.58
Cash dividends declared per share			$ 2.50	$ 5.00