Other Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 29, 2018	Dec. 30, 2017	Mar. 31, 2018
Other Assets, Noncurrent Disclosure [Abstract]
Demo equipment depreciation expense	$ 0	$ 600	$ 600	$ 800
Consignment and demo equipment, net	7,464		7,464		$ 6,746
Long term deposits	2,830		2,830		3,232
Restricted Cash, Noncurrent	0		0		1,093
Other	3,208		3,208		3,709
Other assets	$ 13,502		$ 13,502		$ 14,780