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Equity (Schedule of Performance Stock Activity) (Details) - $ / shares
6 Months Ended
Dec. 28, 2017
Mar. 31, 2018
Mar. 31, 2017
Performance Stock Units [Member]      
Number of Shares      
Non-vested, beginning balance (in shares)   328,708  
Granted (in shares) 108,500 240,164  
Vested (in shares)   (166,058)  
Non-vested, ending balance (in shares)   402,814  
Weighted Average Grant Date Fair Value      
Non-vested, beginning balance (in usd per share)   $ 8.36  
Granted (in usd per share)   7.62 $ 8.34
Vested (in usd per share)   6.86  
Non-vested, ending balance (in usd per share)   $ 8.54  
Performance Stock Awards [Member]      
Number of Shares      
Non-vested, beginning balance (in shares)   33,333  
Granted (in shares)   0  
Vested (in shares)   0  
Non-vested, ending balance (in shares)   33,333  
Weighted Average Grant Date Fair Value      
Non-vested, beginning balance (in usd per share)   $ 12.25  
Granted (in usd per share)   0.00  
Vested (in usd per share)   0.00  
Non-vested, ending balance (in usd per share)   $ 12.25