Revenue (Disaggregation of Revenue) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jun. 29, 2019	Jun. 30, 2018	Jul. 01, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 105,581	$ 107,954	$ 123,037	$ 127,472	$ 117,028	$ 108,352	$ 111,725	$ 109,217	$ 464,044	$ 446,322	$ 467,797
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Net sales									458,256
Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Net sales									$ 5,788