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Note 13 - Employee Benefit Plans (Details) - Unpaid Incentive Compensation (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Unpaid Incentive Compensation [Abstract]
Unpaid incentive compensation	$ 1,627exar_UnpaidIncentiveCompensation	$ 698exar_UnpaidIncentiveCompensation	$ 781exar_UnpaidIncentiveCompensation