Note 1 - Summary of Significant Accounting Policies - Computation of Basic and Diluted Income (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Weighted average common shares (in shares)	26,059	25,324	25,905	25,223
Effect of dilutive stock options (in shares)	663	473	715
(in shares)	26,722	25,797	26,620	25,223