Other Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Dec. 31, 2016	Jan. 02, 2016	Apr. 02, 2016
Other Assets, Noncurrent Disclosure [Abstract]
Demo equipment depreciation expense	$ 100	$ 200	$ 300	$ 400
Consignment and demo equipment, net	11,130		11,130		$ 7,242
Long term deposits	2,627		2,627		2,543
Accounts Receivable, Net, Noncurrent	90		90		320
Accounts Receivable, Net	27,734		27,734		43,090
Other	3,178		3,178		2,521
Other assets	$ 17,025		$ 17,025		$ 12,626