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Consolidated Statement of Stockholder's Equity Statement - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Accumulated Deficit | Accumulated Other Comprehensive Loss | Net Investment Hedging | Net Investment Hedging Accumulated Other Comprehensive Loss | Cash Flow Hedging | Cash Flow Hedging Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2016-09 | $ 125 |  | $ 681 | $ (556) |  |  |  |  |
Beginning balance (in shares) at Sep. 30, 2017 |  | 115,333 |  |  |  |  |  |  |
Beginning balance at Sep. 30, 2017 | 885,436 | $ 1,153 | 1,609,030 | (650,840) | $ (73,907) |  |  |  |
Common stock issued for employee stock-based awards | 0 | $ 14 | (14) |  |  |  |  |  |
Common stock issued for employee stock-based awards (in shares) |  | 1,377 |  |  |  |  |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards | (33,942) | $ (5) | (33,937) |  |  |  |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards (in shares) |  | (530) |  |  |  |  |  |  |
Common stock issued for employee stock purchase plan (in shares) |  | 158 |  |  |  |  |  |  |
Common stock issued for employee stock purchase plan | 7,472 | $ 1 | 7,471 |  |  |  |  |  |
Compensation expense from stock-based awards | 35,357 |  | 35,357 |  |  |  |  |  |
Net income (loss) | 21,799 |  |  | 21,799 |  |  |  |  |
Unrealized gain (loss) on hedging instruments, net of tax | (875) |  |  |  |  |  |  | $ (875) | $ (875)
Foreign currency translation adjustment | 12,769 |  |  |  | 12,769 |  |  |  |
Unrealized loss on available-for-sale securities, net of tax | (446) |  |  |  | (446) |  |  |  |
Change in pension benefits, net of tax | 29 |  |  |  | 29 |  |  |  |
Ending balance (in shares) at Mar. 31, 2018 |  | 116,338 |  |  |  |  |  |  |
Ending balance at Mar. 31, 2018 | 927,724 | $ 1,163 | 1,618,588 | (629,597) | (62,430) |  |  |  |
Beginning balance (in shares) at Dec. 30, 2017 |  | 116,126 |  |  |  |  |  |  |
Beginning balance at Dec. 30, 2017 | 889,099 | $ 1,161 | 1,594,546 | (637,519) | (69,089) |  |  |  |
Common stock issued for employee stock-based awards | 0 | $ 1 | (1) |  |  |  |  |  |
Common stock issued for employee stock-based awards (in shares) |  | 60 |  |  |  |  |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards | (454) | $ 0 | (454) |  |  |  |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards (in shares) |  | (6) |  |  |  |  |  |  |
Common stock issued for employee stock purchase plan (in shares) |  | 158 |  |  |  |  |  |  |
Common stock issued for employee stock purchase plan | 7,472 | $ 1 | 7,471 |  |  |  |  |  |
Compensation expense from stock-based awards | 17,026 |  | 17,026 |  |  |  |  |  |
Net income (loss) | 7,922 |  |  | 7,922 |  |  |  |  |
Unrealized gain (loss) on hedging instruments, net of tax | (535) |  |  |  |  |  |  | (535) | (535)
Foreign currency translation adjustment | 7,540 |  |  |  | 7,540 |  |  |  |
Unrealized loss on available-for-sale securities, net of tax | (267) |  |  |  | (267) |  |  |  |
Change in pension benefits, net of tax | (79) |  |  |  | (79) |  |  |  |
Ending balance (in shares) at Mar. 31, 2018 |  | 116,338 |  |  |  |  |  |  |
Ending balance at Mar. 31, 2018 | 927,724 | $ 1,163 | 1,618,588 | (629,597) | (62,430) |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2016-16 | 72,261 |  |  | 72,261 |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2014-09 | $ 367,378 |  |  | 367,378 |  |  |  |  |
Beginning balance (in shares) at Sep. 30, 2018 | 117,981 | 117,981 |  |  |  |  |  |  |
Beginning balance at Sep. 30, 2018 | $ 874,589 | $ 1,180 | 1,558,403 | (599,409) | (85,585) |  |  |  |
Common stock issued for employee stock-based awards | 0 | $ 11 | (11) |  |  |  |  |  |
Common stock issued for employee stock-based awards (in shares) |  | 1,108 |  |  |  |  |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards | (34,491) | $ (4) | (34,487) |  |  |  |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards (in shares) |  | (388) |  |  |  |  |  |  |
Common stock issued for employee stock purchase plan (in shares) |  | 122 |  |  |  |  |  |  |
Common stock issued for employee stock purchase plan | 8,798 | $ 1 | 8,797 |  |  |  |  |  |
Common stock issued | (140) |  | (140) |  |  |  |  |  |
Compensation expense from stock-based awards | 56,374 |  | 56,374 |  |  |  |  |  |
Net income (loss) | (22,528) |  |  | (22,528) |  |  |  |  |
Repurchases of common stock (in shares) |  | (725) |  |  |  |  |  |  |
Repurchases of common stock | (64,994) | $ (7) | (64,987) |  |  |  |  |  |
Unrealized gain (loss) on hedging instruments, net of tax | 277 |  |  |  |  | $ 662 | $ 662 | $ (385) | $ (385)
Foreign currency translation adjustment | (11,602) |  |  |  | (11,602) |  |  |  |
Unrealized loss on available-for-sale securities, net of tax | 302 |  |  |  | 302 |  |  |  |
Change in pension benefits, net of tax | $ 1,484 |  |  |  | 1,484 |  |  |  |
Ending balance (in shares) at Mar. 30, 2019 | 118,098 | 118,098 |  |  |  |  |  |  |
Ending balance at Mar. 30, 2019 | $ 1,247,708 | $ 1,181 | 1,523,949 | (182,298) | (95,124) |  |  |  |
Beginning balance (in shares) at Dec. 29, 2018 |  | 118,657 |  |  |  |  |  |  |
Beginning balance at Dec. 29, 2018 | 1,321,169 | $ 1,187 | 1,553,875 | (138,785) | (95,108) |  |  |  |
Common stock issued for employee stock-based awards | 0 | $ 0 | 0 |  |  |  |  |  |
Common stock issued for employee stock-based awards (in shares) |  | 52 |  |  |  |  |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards | (703) | $ 0 | (703) |  |  |  |  |  |
Shares surrendered by employees to pay taxes related to stock-based awards (in shares) |  | (8) |  |  |  |  |  |  |
Common stock issued for employee stock purchase plan (in shares) |  | 122 |  |  |  |  |  |  |
Common stock issued for employee stock purchase plan | 8,798 | $ 1 | 8,797 |  |  |  |  |  |
Compensation expense from stock-based awards | 26,967 |  | 26,967 |  |  |  |  |  |
Net income (loss) | (43,513) |  |  | (43,513) |  |  |  |  |
Repurchases of common stock (in shares) |  | (725) |  |  |  |  |  |  |
Repurchases of common stock | (64,994) | $ (7) | (64,987) |  |  |  |  |  |
Unrealized gain (loss) on hedging instruments, net of tax | (2,955) |  |  |  |  | $ 2,955 | $ 2,955 |  |
Foreign currency translation adjustment | (4,033) |  |  |  | (4,033) |  |  |  |
Unrealized loss on available-for-sale securities, net of tax | 289 |  |  |  | 289 |  |  |  |
Change in pension benefits, net of tax | $ 773 |  |  |  | 773 |  |  |  |
Ending balance (in shares) at Mar. 30, 2019 | 118,098 | 118,098 |  |  |  |  |  |  |
Ending balance at Mar. 30, 2019 | $ 1,247,708 | $ 1,181 | $ 1,523,949 | $ (182,298) | $ (95,124) |  |  |  |

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