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 (Detail)

v3.2.0.727
Supplemental Equity Information - Summary of Changes in Carrying Amounts of Equity Attributable to Controlling Interest and Noncontrolling Interest (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 27, 2015
Jun. 28, 2014
Jun. 27, 2015
Jun. 28, 2014
Class of Stock [Line Items]        
Beginning balance     $ 486,453 $ 470,024
Comprehensive income $ 19,738 $ 5,673 36,857 14,437
Stock based compensation     4,513 3,734
Restricted share activity     (1,200) 3,950
Issuance of common stock     907 998
Repurchase of common stock     (15,123)  
Tax benefit on stock option exercise     685 422
Distribution to Noncontrolling interest     (1,680) (633)
Ending balance 511,412 492,932 511,412 492,932
Additional Paid In Capital [Member]        
Class of Stock [Line Items]        
Beginning balance     396,586 389,153
Stock based compensation     4,513 3,734
Restricted share activity     (1,200) 3,940
Issuance of common stock     904 995
Repurchase of common stock     (12,726)  
Tax benefit on stock option exercise     685 422
Ending balance 388,762 398,244 388,762 398,244
Retained Earnings [Member]        
Class of Stock [Line Items]        
Beginning balance     86,396 77,592
Comprehensive income     36,340 12,874
Repurchase of common stock     (2,380)  
Ending balance 120,356 90,466 120,356 90,466
Accumulated Other Comprehensive Income [Member]        
Class of Stock [Line Items]        
Beginning balance     1,232 1,442
Comprehensive income     (553) 426
Ending balance 679 1,868 679 1,868
Total [Member]        
Class of Stock [Line Items]        
Beginning balance     484,723 468,678
Comprehensive income     35,787 13,300
Stock based compensation     4,513 3,734
Restricted share activity     (1,200) 3,950
Issuance of common stock     907 998
Repurchase of common stock     (15,123)  
Tax benefit on stock option exercise     685 422
Ending balance 510,292 491,082 510,292 491,082
Noncontrolling Interest [Member]        
Class of Stock [Line Items]        
Beginning balance     1,730 1,346
Comprehensive income     1,070 1,137
Distribution to Noncontrolling interest     (1,680) (633)
Ending balance 1,120 1,850 1,120 1,850
Common Stock [Member]        
Class of Stock [Line Items]        
Beginning balance     124 122
Restricted share activity       1
Repurchase of common stock     (5)  
Ending balance 119 123 119 123
Class A Common Stock [Member]        
Class of Stock [Line Items]        
Beginning balance     369 353
Restricted share activity       9
Issuance of common stock     3 3
Repurchase of common stock     (12)  
Ending balance 360 365 360 365
Class B Stock [Member]        
Class of Stock [Line Items]        
Beginning balance     16 16
Ending balance $ 16 $ 16 $ 16 $ 16