Quarterly report pursuant to Section 13 or 15(d)

Repurchase of Common Stock (Details)

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Repurchase of Common Stock (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Apr. 01, 2017
Mar. 04, 2017
Feb. 04, 2017
Apr. 01, 2017
Apr. 02, 2016
Apr. 01, 2017
Class of Stock [Line Items]            
Authorized amount $ 40,000,000     $ 40,000,000   $ 40,000,000
Shares repurchased (in shares)       49,400 45,460  
Stock repurchased during period, value         $ 700,000 $ 800,000
Aggregated number of shares repurchased (in shares) 2,576,193     2,576,193   2,576,193
Aggregated shares repurchased, value $ 32,500,000     $ 32,500,000   $ 32,500,000
Dollar Value of Shares that May Yet Be Purchased Under the Plans $ 7,500,000     $ 7,500,000   7,500,000
Common Stock            
Class of Stock [Line Items]            
Shares repurchased (in shares) 49,400 0 0 49,400    
Average Price Paid per Share(usd per share) $ 16.24 $ 0.00 $ 0.00 $ 16.24    
Dollar Value of Shares that May Yet Be Purchased Under the Plans $ 7,500,000 $ 8,300,000 $ 8,300,000 $ 7,500,000   $ 7,500,000
Publicly Announced Plan | Common Stock            
Class of Stock [Line Items]            
Shares repurchased (in shares) 49,400 0 0 49,400