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Recent Accounting Pronouncements - Schedule of Adjustment to Opening Balance of Fiscal 2019 Retained Earnings (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jun. 24, 2018	Dec. 30, 2018	Dec. 24, 2017	Dec. 30, 2018	Dec. 24, 2017
Retained Earnings Adjustments [Line Items]
Revenue earned in fourth quarter fiscal 2018 related to contracts open at June 24, 2018		$ 167,711	$ 167,478	$ 349,322	$ 331,720
Less associated cost of sales		153,555	144,802	315,147	285,752
Less associated income tax		$ (2,288)	$ (4,826)	536	$ (1,630)
ASU No. 2014-09 [Member]
Retained Earnings Adjustments [Line Items]
Revenue earned in fourth quarter fiscal 2018 related to contracts open at June 24, 2018	$ 8,593
Less associated cost of sales	7,992
Less associated income tax	142
Adjustment to retained earnings for contracts open at June 24, 2018	$ 459			$ 459