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Earnings Per Share and Certain Related Information (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 23, 2015 | Mar. 30, 2018 | Mar. 31, 2017 | Mar. 30, 2018 | Mar. 31, 2017
Numerator for Basic and Diluted EPS: |  |  |  |  |
Net income |  | $ 48,587,000 | $ 50,018,000 | $ 50,750,000 | $ 110,554,000
Net income allocated to participating securities |  | (254,000) | (594,000) | (269,000) | (1,389,000)
Net income allocated to common stock for EPS calculation |  | $ 48,333,000 | $ 49,424,000 | $ 50,481,000 | $ 109,165,000
Denominator for Basic and Diluted EPS: |  |  |  |  |
Weighted average basic shares (in shares) |  | 142,531,000 | 120,919,000 | 133,770,000 | 120,935,000
Shares allocated to participating securities (in shares) |  | (746,000) | (1,435,000) | (816,000) | (1,519,000)
Shares used for calculating basic EPS attributable to common stock (in shares) |  | 141,785,000 | 119,484,000 | 132,954,000 | 119,416,000
Effect of dilutive securities: |  |  |  |  |
Stock compensation plans (in shares) |  | 1,048,000 | 795,000 | 1,035,000 | 866,000
Shares used for calculating diluted EPS attributable to common stock (in shares) |  | 142,833,000 | 120,279,000 | 133,989,000 | 120,282,000
Basic (in dollars per share) |  | $ 0.34 | $ 0.41 | $ 0.38 | $ 0.91
Diluted (in dollars per share) |  | $ 0.34 | $ 0.41 | $ 0.38 | $ 0.91
Share Repurchases |  |  |  |  |
Amount authorized to be repurchased | $ 500,000,000 |  |  |  |
Average cost per share repurchased (in dollars per share) | $ 60.77 |  |  |  |
Number of shares repurchased (in shares) | 49,000 |  |  |  |

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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=96948231&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1252-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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