CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Apr. 01, 2018	Mar. 31, 2019	Apr. 01, 2018
Income Statement [Abstract]
Net Sales	$ 128,390	$ 93,811	$ 343,572	$ 237,295
COST OF SALES	97,033	69,429	261,939	174,816
GROSS PROFIT	31,357	24,382	81,633	62,479
OPERATING EXPENSES:
Selling and marketing	5,210	3,560	13,757	9,969
General and administrative	6,696	5,099	20,576	14,388
Amortization of intangible assets	987	524	2,504	1,077
Total operating expenses	12,893	9,183	36,837	25,434
OPERATING INCOME	18,464	15,199	44,796	37,045
OTHER EXPENSE:
Interest expense, net	1,867	897	4,829	2,527
INCOME BEFORE INCOME TAX EXPENSE	16,597	14,302	39,967	34,518
INCOME TAX EXPENSE	3,834	2,848	8,552	8,009
NET INCOME	$ 12,763	$ 11,454	$ 31,415	$ 26,509
EARNINGS PER COMMON SHARE:
Basic (in dollars per share)	$ 0.68	$ 0.62	$ 1.68	$ 1.42
Diluted (in dollars per share)	$ 0.68	$ 0.61	$ 1.67	$ 1.42
WEIGHTED AVERAGE SHARES USED FOR COMPUTATION OF:
Basic earnings per share (in shares)	18,657,719	18,622,083	18,652,289	18,619,006
Diluted earnings per share (in shares)	18,756,605	18,728,424	18,765,897	18,705,801