Segment and Geographic Information (Schedule of Revenues by Geographic Region) (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jul. 01, 2016 USD ($)	Apr. 01, 2016 USD ($)	Jan. 01, 2016 USD ($)	Oct. 02, 2015 USD ($)	Jun. 30, 2017 USD ($) segments	Jul. 01, 2016 USD ($)	Jul. 03, 2015 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments | segments									1
Revenue	$ 56,431	$ 58,700	$ 68,536	$ 58,207	$ 58,252	$ 60,467	$ 70,416	$ 79,555	$ 241,874	$ 268,690	$ 335,878
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									132,078	125,482	153,239
Africa and Middle East
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									60,150	82,742	97,112
Europe and Russia
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									14,128	20,539	35,990
Latin America and Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 35,518	$ 39,927	$ 49,537