Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 28, 2014	Dec. 29, 2013	Dec. 28, 2014	Dec. 29, 2013
Sales:
Net sales	$ 35,919	$ 21,846	$ 91,986	$ 70,682
Net sales, related party	8,396	8,844	26,207	26,653
Total net sales	44,315	30,690	118,193	97,335
Cost of sales:
Cost of sales	20,113	12,393	52,127	36,576
Cost of sales, related party	3,099	3,556	10,408	11,619
Amortization of purchased intangible assets and inventory step-up	2,533	1,898	9,215	5,346
Research and development	10,035	6,929	28,647	20,245
Selling, general and administrative	11,793	8,829	33,467	25,559
Restructuring charges and exit costs	3,500	100	10,400	1,500
Merger and acquisition costs	179	257	6,955	866
Impairment of Intangibles			12,284
Net change in fair value of contingent consideration		58	(4,343)	(2,437)
Total operating expenses	23,425	16,147	72,695	45,622
Warranty Reserve, net	(372)		(286)	1,440
Total cost of sales	27,425	17,864	86,215	55,103
Loss from operations	(6,535)	(3,321)	(40,717)	(3,390)
Other income and expense, net:
Interest income and other, net	53	321	520	980
Interest expense	(46)	(39)	(1,026)	(117)
Total other income and expense, net	7	282	(506)	863
Loss before income taxes	(6,528)	(3,039)	(41,223)	(2,527)
(Benefit) Provision for income taxes	71	(1,405)	870	(8,181)
Net income (loss)	(6,599)	(1,634)	(42,093)	5,654
Less: Net loss attributable to non-controlling interests			(37)
Net income (loss) attributable to Exar Corporation	(6,599)	(1,634)	(42,056)	5,654
Net income (loss) per share:
Basic (in Dollars per share)	$ (0.14)	$ (0.03)	$ (0.89)	$ 0.12
Diluted (in Dollars per share)	$ (0.14)	$ (0.03)	$ (0.89)	$ 0.12
Shares used in the computation of net income (loss) per share:
Basic (in Shares)	47,119	47,529	47,165	47,277
Diluted (in Shares)	47,119	47,529	47,165	48,815
Gross profit	16,890	12,826	31,978	42,232
Cost of Sales [Member]
Cost of sales:
Restructuring charges and exit costs	2,052	17	6,384	122
Impairment of Intangibles			8,367
Operating Expense [Member]
Cost of sales:
Restructuring charges and exit costs	1,418	74	4,052	1,389
Impairment of Intangibles			$ 3,917