Note 3 - Stock-based Compensation (Tables)

3 Months Ended

Aug. 28, 2016

Notes Tables

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Three Months Ended
	August 28, 2016		August 30, 2015
Options	$	291	$	330
RSUs		516		467
Total stock-based compensation expense	$	807	$	797

	Three Months Ended
	August 28, 2016		August 30, 2015
Cost of sales	$	113	$	98
Research and development		23		22
Selling, general and administrative		671		677
Total stock-based compensation expense	$	807	$	797