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Note 11 - Income Taxes (Details) - Unrecognized Tax Benefits (USD $)
In Thousands, unless otherwise specified
12 Months Ended
May 25, 2014
May 26, 2013
May 27, 2012
Unrecognized Tax Benefits [Abstract]      
Unrecognized tax benefits – beginning of the period $ 998 $ 766 $ 760
Gross increases – tax positions in prior period 7 103 1
Gross decreases – tax positions in prior period (48)   (1)
Gross increases – current-period tax positions 78 129 246
Lapse of statute of limitations     (240)
Unrecognized tax benefits – end of the period $ 1,035 $ 998 $ 766