Quarterly report pursuant to Section 13 or 15(d)

Supplemental Equity Information - Summary of Changes in Carrying Amounts of Equity Attributable to Controlling Interest and Noncontrolling Interest (Details)

v3.7.0.1
Supplemental Equity Information - Summary of Changes in Carrying Amounts of Equity Attributable to Controlling Interest and Noncontrolling Interest (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 25, 2017
Mar. 26, 2016
Mar. 25, 2017
Mar. 26, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     $ 554,587 $ 506,380
Comprehensive income $ 35,393 $ 32,976 42,674 24,120
Amortization of share-based awards     4,222 2,986
Restricted share activity     (5,502) (578)
Issuance of common stock, including net share settlement of stock options     (13,613) (552)
Tax benefit on stock option exercise, net of tax deficiency     13,142 1,177
Distribution to Noncontrolling interest     (1,019) (592)
Other       1
Ending balance 594,491 532,942 594,491 532,942
Additional Paid In Capital        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     393,297 388,636
Amortization of share-based awards     4,222 2,986
Restricted share activity     (5,501) (580)
Issuance of common stock, including net share settlement of stock options     (13,619) (554)
Tax benefit on stock option exercise, net of tax deficiency     13,142 1,177
Ending balance 391,541 391,665 391,541 391,665
Retained Earnings        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     160,501 115,987
Comprehensive income     42,321 24,095
Ending balance 202,822 140,082 202,822 140,082
Accumulated Other Comprehensive Income        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     (1,294) 164
Comprehensive income     (364) (692)
Ending balance (1,658) (528) (1,658) (528)
Total        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     553,014 505,286
Comprehensive income     41,957 23,403
Amortization of share-based awards     4,222 2,986
Restricted share activity     (5,502) (578)
Issuance of common stock, including net share settlement of stock options     (13,613) (552)
Tax benefit on stock option exercise, net of tax deficiency     13,142 1,177
Ending balance 593,220 531,722 593,220 531,722
Noncontrolling Interest        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     1,573 1,094
Comprehensive income     717 717
Distribution to Noncontrolling interest     (1,019) (592)
Other       1
Ending balance 1,271 1,220 1,271 1,220
Common Stock        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     120 119
Issuance of common stock, including net share settlement of stock options     2  
Ending balance 122 119 122 119
Class A Common Stock        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     374 364
Restricted share activity     (1) 2
Issuance of common stock, including net share settlement of stock options     4 2
Ending balance 377 368 377 368
Class B Common Stock        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     16 16
Ending balance $ 16 $ 16 $ 16 $ 16