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Shareholders' Equity (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Jul. 11, 2016
May 06, 2016
Dec. 28, 2015
Jun. 29, 2015
Apr. 03, 2015
Sep. 30, 2016
Jul. 01, 2016
Apr. 01, 2016
Oct. 02, 2015
Sep. 30, 2016
Oct. 02, 2015
Dec. 28, 2012
Nov. 08, 2016
May 09, 2016
Jan. 01, 2016
Equity, Class of Treasury Stock [Line Items]                              
Equity incentive compensation awards given up                       50.00%      
Additional stock repurchase authorized           $ 5,000,000                  
Stock repurchase authorized           127,200,000       $ 127,200,000          
Repurchase of common stock   1,500,000                          
Purchase price per share   $ 14.77                          
Weighted average shares outstanding   4.00%     11.00%                    
Weighted average shares outstanding accretive on an annualized basis   $ 0.04     $ 0.03                    
Amount available under repurchase plan           $ 4,400,000       $ 4,400,000          
Shares repurchased for employee net vesting obligations, shares           4,000     5,000 288,000 281,000        
Shares repurchased for employee net vesting obligations, value           $ 50,000     $ 100,000 $ 3,900,000 $ 2,200,000        
Dividend paid, per share     $ 0.20 $ 0.12     $ 0.13 $ 0.26              
Dividend paid, cash value $ 4,000,000   $ 3,200,000 $ 3,100,000                      
Chief Executive Officer [Member]                              
Equity, Class of Treasury Stock [Line Items]                              
Repurchase of common stock   697,000                          
Beneficial owners   11.80%                          
Chief Operating Officer [Member]                              
Equity, Class of Treasury Stock [Line Items]                              
Repurchase of common stock   732,000                          
Beneficial owners   4.90%                          
Chief Financial Officer [Member]                              
Equity, Class of Treasury Stock [Line Items]                              
Repurchase of common stock   73,000                          
Beneficial owners   0.90%                          
Stock Appreciation Rights (SARs) [Member]                              
Equity, Class of Treasury Stock [Line Items]                              
SARs exchanged                       2,900,000      
Exercise price                       $ 4.00      
Target achievement, pro forma Earnings per share                       50.00%      
Target achievement, pro forma EBITDA                       50.00%      
Target achievement, Term                   6 years          
SARs exercised                   0          
Stock Repurchase A [Member]                              
Equity, Class of Treasury Stock [Line Items]                              
Repurchase of common stock           30,000     0 2,100,000 149,000        
Purchase price per share           $ 14.84       $ 14.60 $ 9.10        
Total cost           $ 449,000       $ 30,100,000 $ 1,400,000        
Subsequent Event [Member]                              
Equity, Class of Treasury Stock [Line Items]                              
Dividend declared                         $ 0.13    
Revolving line of credit facility [Member]                              
Equity, Class of Treasury Stock [Line Items]                              
Additional borrowing capacity                           $ 25,000,000  
Borrowing capacity under credit facility           20,000,000 $ 25,000,000     20,000,000       45,000,000  
Credit facility amount outstanding           13,000,000       13,000,000       $ 0  
Term Loan [Member]                              
Equity, Class of Treasury Stock [Line Items]                              
Borrowing capacity under credit facility           $ 47,000,000       $ 47,000,000          
Revolving Line Of Credit Facility And Term Loan [Member]                              
Equity, Class of Treasury Stock [Line Items]                              
Credit facility amount outstanding                             $ 0