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Revenue Recognition - Summary of Impact of Adoption of New Revenue Recognition Guidance (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
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Revenue		$ 167,711	$ 167,478	$ 349,322	$ 331,720
Cost of sales		153,555	144,802	315,147	285,752
Gross profit (loss)		14,156	$ 22,676	34,175	$ 45,968
Inventories	$ 126,311	134,642		134,642
Contract assets		10,537		10,537
ASU No. 2014-09 [Member]
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	8,593
Cost of sales	$ 7,992
ASU No. 2014-09 [Member] \| Treatment Under Previous Revenue Recognition Guidance [Member]
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Revenue				347,311
Cost of sales				313,115
Gross profit (loss)				34,196
Inventories		144,619		144,619
ASU No. 2014-09 [Member] \| Adjustments In Connection With New Revenue Recognition Guidance [Member]
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Revenue				2,011
Cost of sales				2,032
Gross profit (loss)				(21)
Inventories		(9,977)		(9,977)
Contract assets		$ 10,537		$ 10,537