Note 4 - Income Taxes - Open Tax Years by Major Jurisdiction (Details)	12 Months Ended
	Feb. 25, 2018
CALIFORNIA [Member] | Earliest Tax Year [Member]
Open tax year	2015
CALIFORNIA [Member] | Latest Tax Year [Member]
Open tax year	2018
New York [Member] | Earliest Tax Year [Member]
Open tax year	2016
New York [Member] | Latest Tax Year [Member]
Open tax year	2018
France [Member] | Earliest Tax Year [Member]
Open tax year	2015
France [Member] | Latest Tax Year [Member]
Open tax year	2018
Singapore [Member] | Earliest Tax Year [Member]
Open tax year	2014
Singapore [Member] | Latest Tax Year [Member]
Open tax year	2018