XML 20 R31.htm IDEA: XBRL DOCUMENT v3.2.0.727
Shareholders' Equity and Debt (Debt) (Details) - USD ($)
6 Months Ended
Jun. 26, 2014
Jun. 30, 2015
Dec. 31, 2014
Line of Credit Facility [Line Items]      
Long-term Line of Credit, Noncurrent   $ 1,700,000 $ 0
Employee | Restricted Stock      
Line of Credit Facility [Line Items]      
Restricted stock awards, vesting period   4 years  
SunTrust Bank | Line of Credit | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Expiration period 3 years    
Line of credit, maximum borrowing capacity upon satisfaction of certain conditions $ 20,000,000    
Line of credit, maximum borrowing capacity $ 12,000,000    
Interest rate spread, minimum 1.00%    
Interest rate spread, maximum 2.85%    
Effective interest rate   1.184%  
Line of credit, unused capacity, commitment fee percentage 0.25%