Note 18 - Subsequent Event (Details Textual)	Jan. 09, 2017 USD ($)
Subsequent Event [Member] \| New Headquarter Facility [Member]
Operating Lease Monthly Rent	$ 90,000

Amount of the monthly rent required for operating lease.

No definition available.

Name:	exar_OperatingLeaseMonthlyRent
Namespace Prefix:	exar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration