Segment Information - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Dec. 31, 2017	Jan. 01, 2017	Apr. 02, 2017
Revenue, Major Customer [Line Items]
Revenues	$ 217,075	$ 176,358	$ 618,186	$ 552,545
Revenue | Customer Concentration Risk | Uniquest
Revenue, Major Customer [Line Items]
Concentration risk (percentage)	12.00%	10.00%	10.00%	11.00%
Revenue | Customer Concentration Risk | Avnet
Revenue, Major Customer [Line Items]
Concentration risk (percentage)	15.00%	11.00%	15.00%	10.00%
Revenue | Customer Concentration Risk | WT Microelectronics
Revenue, Major Customer [Line Items]
Concentration risk (percentage)	11.00%
Revenue | Customer Concentration Risk | Macnica
Revenue, Major Customer [Line Items]
Concentration risk (percentage)	10.00%		10.00%
Accounts Receivable | Customer Concentration Risk | Significant Distributor 1
Revenue, Major Customer [Line Items]
Concentration risk (percentage)			18.00%		11.00%
Accounts Receivable | Customer Concentration Risk | Significant Distributor 2
Revenue, Major Customer [Line Items]
Concentration risk (percentage)			11.00%		10.00%
United States
Revenue, Major Customer [Line Items]
Revenues	$ 15,800	$ 19,400	$ 52,800	$ 53,600