Subsequent Events (Details) - USD ($) $ in Millions	Aug. 01, 2015	Jul. 31, 2015	Jun. 27, 2015	Jun. 28, 2014
Subsequent Events.
Outstanding common stock (in shares)			235,000,000	230,000,000
Subsequent Events | Lumentum
Subsequent Events.
Percentage of outstanding shares distributed	80.10%
Stock exchange ratio	0.20
Ownership percentage	19.90%
Outstanding common stock (in shares)	11,700,000
Subsequent Events | Lumentum | Series A Preferred Stock
Subsequent Events.
Shares received in connection with the separation		40,000
Subsequent Events | Lumentum | Series A Preferred Stock | Amada
Subsequent Events.
Shares issued for transaction		35,805
Proceeds received from securities purchase agreement		$ 35.8
Shares cancelled		4,195