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Stock-Based Compensation (Details) - Equity Plan - Restricted Stock Units
$ in Thousands
3 Months Ended 9 Months Ended 11 Months Ended
Sep. 23, 2015
shares
Mar. 24, 2014
shares
May. 03, 2013
item
shares
Sep. 30, 2015
USD ($)
shares
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
shares
Sep. 30, 2014
USD ($)
Mar. 24, 2014
shares
Stock-based compensation                
Shares granted           148,512   148,512
Number of shares of common stock issued for each unit when vested     1          
Compensation expense recognized | $       $ 262 $ 262 $ 787 $ 671  
Unrecognized compensation expense | $       $ 1,600   $ 1,600    
Accrued dividend equivalent units           535    
Executive One                
Stock-based compensation                
Shares granted     100,000          
Number of equal installments to vest units over the service period | item     4          
Shares vested           50,000    
Executive Two                
Stock-based compensation                
Shares granted   48,512            
Shares vested 24,256              
Shares vested outstanding       24,256   24,256