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Note 3 - Earnings Per Share - Calculation of Income (Loss) Per Share (Details) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Apr. 02, 2017
Apr. 03, 2016
Net Income Attributable to Participating Securities $ 8,547 $ 12,894
Weighted Average Shares Outstanding (in shares) 63,635 65,107
Participating Securities (in shares) 446 578
Shares for Basic Earnings Per Share (in shares) 64,081 65,685
Dilutive Effect of Stock Options (in shares) 42 38
Shares for Diluted Earnings Per Share (in shares) 64,123 65,723
Participating Securities [Member]    
Net Income Attributable to Participating Securities $ 100 $ 100