Earnings (Loss) Per Share - Common Equivalent Shares Excluded from Calculation from Net Income Per Share (Detail) - shares shares in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Apr. 01, 2016 |
Apr. 03, 2015 |
Apr. 01, 2016 |
Apr. 03, 2015 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Total common stock equivalent shares excluded | 2,139 | 1,908 | 2,081 | 1,815 |
| Restricted Stock Units and Awards [Member] | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Total common stock equivalent shares excluded | 935 | 721 | 900 | 704 |
| Stock Options [Member] | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Total common stock equivalent shares excluded | 381 | 441 | 384 | 666 |
| Warrants [Member] | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Total common stock equivalent shares excluded | 823 | 746 | 797 | 444 |