Significant Customers and Concentrations of Credit Risk (Details) - Customer	3 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Mar. 31, 2018
Significant Customers and Concentrations of Credit Risk [Abstract]
Percentage of Accounts Receivable Accounted From Company Distributor One	70.00%		61.00%
Percentage of net revenues through resale of product from Company Distributor One	51.00%	41.00%
Number of End Customers Accounted For 10% or More of Net Revenues	0	0
Percentage of higher grade security investment in debt securities	91.00%
Percentage of Mortgage Backed Securities In Investment Portfolio	24.00%