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Income Taxes - Components of Income Tax (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 27, 2018 | Jan. 28, 2017 | Jul. 29, 2017 | Jul. 30, 2016 | Jul. 25, 2015
Current: |  |  |  |  |
Federal | $ (4,384) |  | $ 62,455 | $ 42,096 | $ 42,516
Foreign | 598 |  | 176 | 310 | 502
State | 1,166 |  | 12,344 | 8,399 | 6,998
Current Income Tax Expense (Benefit) | (2,620) |  | 74,975 | 50,805 | 50,016
Deferred: |  |  |  |  |
Federal | (21,332) |  | 17,051 | 26,467 | 305
Foreign | (37) |  | (35) | (296) | 268
State | 1,704 |  | 1,217 | 611 | 671
Deferred income tax (benefit) provision | (19,665) |  | 18,233 | 26,782 | 1,244
Total provision for income taxes | $ (22,285) | $ 44,332 | $ 93,208 | $ 77,587 | $ 51,260

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- Definition Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=63044130 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 + Details
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