RESTRUCTURING - Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Sep. 30, 2016 position	Apr. 02, 2017 USD ($)	Apr. 03, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring costs		$ 2,572	$ 270
Personnel costs
Restructuring Cost and Reserve [Line Items]
Anticipated restructuring costs remaining		5,100
Operating Facility Leases
Restructuring Cost and Reserve [Line Items]
Anticipated restructuring costs remaining		13,500
2016 Plan
Restructuring Cost and Reserve [Line Items]
Expected number of positions eliminated | position	430
Restructuring costs		2,600
2016 Plan | Personnel costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs		1,500
2016 Plan | Other
Restructuring Cost and Reserve [Line Items]
Restructuring costs		1,100
Spansion Integration Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs		2,572	270
Personnel costs			300
Spansion Integration Plan | Personnel costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs		1,503	246
Spansion Integration Plan | Other
Restructuring Cost and Reserve [Line Items]
Restructuring costs		$ 1,069	$ 0