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)

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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 9 Months Ended
Jun. 24, 2017
Jun. 25, 2016
Jun. 24, 2017
Jun. 25, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     $ 554,587 $ 506,380
Comprehensive income $ 33,061 $ 26,389 75,734 50,509
Amortization of share-based awards     6,377 4,796
Restricted share activity, including net share settlement     (7,492) (1,229)
Issuance of common stock, including net share settlement of stock options     (16,350) (6,647)
Tax benefit on stock option exercise, net of tax deficiency     17,170 4,722
Distribution to Noncontrolling interest     (1,019) (592)
Other       1
Ending balance 629,007 557,940 629,007 557,940
Total        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     553,014 505,286
Comprehensive income     74,376 49,156
Amortization of share-based awards     6,377 4,796
Restricted share activity, including net share settlement     (7,492) (1,229)
Issuance of common stock, including net share settlement of stock options     (16,350) (6,647)
Tax benefit on stock option exercise, net of tax deficiency     17,170 4,722
Ending balance 627,095 556,084 627,095 556,084
Additional Paid In Capital        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     393,297 388,636
Amortization of share-based awards     6,377 4,796
Restricted share activity, including net share settlement     (7,491) (1,230)
Issuance of common stock, including net share settlement of stock options     (16,358) (6,654)
Tax benefit on stock option exercise, net of tax deficiency     17,170 4,722
Ending balance 392,995 390,270 392,995 390,270
Retained Earnings        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     160,501 115,987
Comprehensive income     74,569 50,125
Ending balance 235,070 166,112 235,070 166,112
Accumulated Other Comprehensive Income (Loss)        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     (1,294) 164
Comprehensive income     (193) (969)
Ending balance (1,487) (805) (1,487) (805)
Noncontrolling Interest        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     1,573 1,094
Comprehensive income     1,358 1,353
Distribution to Noncontrolling interest     (1,019) (592)
Other       1
Ending balance 1,912 1,856 1,912 1,856
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 1
Ending balance 122 120 122 120
Class A Common Stock        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     374 364
Restricted share activity, including net share settlement     (1) 1
Issuance of common stock, including net share settlement of stock options     6 6
Ending balance 379 371 379 371
Class B Common Stock        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning balance     16 16
Ending balance $ 16 $ 16 $ 16 $ 16