Note 13 - Net Income (Loss) Per Share (Details) - Summary of Net Income (Loss) per Share (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Summary of Net Income (Loss) per Share [Abstract]
Net income (loss) attributable to Exar Corporation (in Dollars)	$ (12,105)	$ 806
Shares used in computation of net income (loss) per share:
Basic	47,236	46,805
Effect of options and awards		1,280
Diluted	47,236	48,085
Net income (loss) per share:
Basic (in Dollars per share)	$ (0.26)	$ 0.02
Diluted (in Dollars per share)	$ (0.26)	$ 0.02