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Share-Based Compensation - Narrative (Details)
6 Months Ended 12 Months Ended
Jul. 02, 2016
shares
Dec. 31, 2016
USD ($)
plan
tranche
shares
Jan. 02, 2016
USD ($)
shares
Jan. 03, 2015
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of stock compensation plans | plan   3    
Stock-based compensation expense | $   $ 2,339,000 $ 1,827,000 $ 3,840,000
Income tax benefits offset by a valuation allowance | $   900,000 700,000 1,500,000
Excess tax benefits from share-based compensation arrangements | $   $ 0 $ 0 $ 0
Forfeiture rate   0.00% 13.00% 13.00%
Long-term equity incentive plan 2004        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares reserved for issuance   0    
Long term equity incentive plan 2006        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares reserved for issuance   0    
Long-term equity incentive plan 2016        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares reserved for issuance   263,500    
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unrecognized compensation expense | $   $ 300,000    
Weighted average term for compensation expense to be recognized   6 months    
Weighted average remaining contractual term   6 months    
Share-based compensation, shares excluded from weighted average remaining contractual terms (in shares)   0    
Total fair value of vested stocks | $   $ 1,100,000 $ 1,500,000 $ 2,400,000
Share-based compensation arrangement, shares outstanding (in shares)   98,560 170,335  
Shares vested during the period   69,825    
Stock-based compensation expense | $   $ 983,000 $ 1,606,000 $ 1,941,000
Restricted Stock | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards vesting period   3 years    
Weighted average remaining contractual term   3 years    
Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unrecognized compensation expense | $   $ 1,000,000    
Weighted average term for compensation expense to be recognized   1 year 7 days    
Weighted average remaining contractual term   1 year 7 days    
Share-based compensation, shares excluded from weighted average remaining contractual terms (in shares)   200,732    
Total fair value of vested stocks | $   $ 600,000    
Share-based compensation arrangement, shares outstanding (in shares)   270,450 140,179  
Shares vested during the period   65,711 0 0
Restricted Stock Units (RSUs) | Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards vesting period   2 years    
Restricted Stock Units (RSUs) | Director        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards vesting period   1 year    
Restricted Stock Units (RSUs) | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards vesting period   3 years    
Weighted average remaining contractual term   3 years    
Restricted Stock Units (RSUs) | Maximum | Director        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation, remaining contractual terms   10 years    
Performance Shares (2)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unrecognized compensation expense | $   $ 600,000    
Share-based compensation, remaining contractual terms   1 year 7 months 6 days    
Share-based compensation, shares excluded from weighted average remaining contractual terms (in shares)   0    
Total fair value of vested stocks | $   $ 1,600,000 $ 1,600,000 $ 1,700,000
Share-based compensation arrangement, shares outstanding (in shares)   67,000 126,306  
Number of vesting tranches | tranche   3    
Shares vested during the period   54,556    
Stock-based compensation expense | $   $ 92,000 $ 127,000 $ 1,725,000
Allocated share-based compensation | $   $ 0    
Award requisite service period   3 years    
Performance Shares (2) | Employees and Directors No Longer Employed During Current Year        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement, shares outstanding (in shares)   0 46,941  
Shares vested during the period 46,941      
Stock-based compensation expense | $   $ 200,000    
Performance Shares (2) | Employees and Directors No Longer Employed During Prior Year        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense | $     $ 1,200,000  
Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)   0 0 0
Stock options exercised in the period   0 0 0
Compensation expense for options | $   $ 0 $ 0 $ 0
Stock options | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average remaining contractual term   10 years    
Stock Appreciation Rights (SARs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)   493,000    
Stock-based compensation expense | $   $ 375,000 $ 0 $ 0
Allocated share-based compensation | $   $ 400,000    
Vesting immediately | Restricted Stock Units (RSUs) | Director        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation, shares excluded from weighted average remaining contractual terms (in shares)   8,186