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Acquisitions - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
--- | ---
Mar. 29, 2020 | Mar. 31, 2019
Business Acquisition [Line Items] |  |
Pro forma net income attributable to Kratos | $ (0.2) | $ 3.1
FTT |  |
Business Acquisition [Line Items] |  |
Pro forma revenues | 168.5 |
Pro forma net income before tax | 1.3 |
Pro forma net income | 2.2 |
Pro forma net income attributable to Kratos | $ 2.4 |
Basic pro forma income per share attributable to Kratos (USD per share) | $ 0.02 |
Diluted pro forma income per share attributable to Kratos (USD per share) | $ 0.02 |

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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