Annual report pursuant to Section 13 and 15(d)

Note 14 - Incentive Stock Option Plans (Details Textual)

v3.7.0.1
Note 14 - Incentive Stock Option Plans (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
May 22, 2008
Dec. 25, 2016
Dec. 27, 2015
Dec. 28, 2014
Dec. 29, 2013
Dec. 25, 2005
Allocated Share-based Compensation Expense   $ 5,800 $ 4,100 $ 2,800    
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense   378 743 1,900    
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net   8,300        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options   13,500        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value   444 863 6,300    
Proceeds from Stock Options Exercised   $ 219 $ 250 183    
Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number   1,245,836 1,150,085      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition   3 years 98 days        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value   $ 3,600 $ 2,800 $ 1,900    
Long-term Equity Incentive Plan 2005 [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized           2,400,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized 1,500,000       2,000,000  
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issuable   1,400,000        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   1,900,000        
Stock Issued During Period, Shares, Restricted Stock Award, Gross   376,423 893,662 275,794    
Long-term Equity Incentive Plan 2005 [Member] | Second Anniversary [Member]            
Stock Issued During Period, Shares, Restricted Stock Award, Gross   95,792 54,095 125,932    
Long-term Equity Incentive Plan 2005 [Member] | After Grant Date [Member]            
Stock Issued During Period, Shares, Restricted Stock Award, Gross   135,631 214,567      
Long-term Equity Incentive Plan 2005 [Member] | Between 2017 Anniversary Date and 2020 Anniversary Date [Member]            
Stock Issued During Period, Shares, Restricted Stock Award, Gross     300,000      
Long-term Equity Incentive Plan 2005 [Member] | Between 2017 Anniversary Date and 2020 Anniversary Date [Member] | Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     25.00%      
Long-term Equity Incentive Plan 2005 [Member] | Between the 2018 Anniversary Date and the 2021 Anniversary Date [Member]            
Stock Issued During Period, Shares, Restricted Stock Award, Gross     325,000      
Long-term Equity Incentive Plan 2005 [Member] | Between the 2018 Anniversary Date and the 2021 Anniversary Date [Member] | Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     25.00%      
Long-term Equity Incentive Plan 2005 [Member] | Third Anniversary [Member]            
Stock Issued During Period, Shares, Restricted Stock Award, Gross   45,000        
Long-term Equity Incentive Plan 2005 [Member] | Between the 2018 Anniversary Date and the 2019 Anniversary Date [Member]            
Stock Issued During Period, Shares, Restricted Stock Award, Gross   100,000        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage   50.00%        
Long-term Equity Incentive Plan 2005 [Member] | Minimum [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period           1 year
Long-term Equity Incentive Plan 2005 [Member] | Maximum [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period           5 years