Document and Entity Information	6 Months Ended
	Jun. 24, 2012	Nov. 30, 2012
Document Information [Line Items]
Entity Registrant Name	KRATOS DEFENSE & SECURITY SOLUTIONS, INC.
Entity Central Index Key	0001069258
Current Fiscal Year End Date	--12-30
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 24, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Amendment Flag	true
Amendment Description	This amendment (the “Amendment”) to the Quarterly Report on Form 10-Q for the quarterly period ended June 24, 2012 (the “Original Form 10-Q”), of Kratos Defense & Security Solutions, Inc. (the “Company”) which was originally filed with the Securities and Exchange Commission (“SEC”) on August 2, 2012, is being filed for the purpose of adding Note 14 - Condensed Consolidating Financial Statements (the “Guarantor Footnote”) to the consolidated financial statements filed with the Original Form 10-Q in order to conform to the disclosure requirements of Rule 3-10 of Regulation S-X under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The purpose of the Guarantor Footnote is to provide additional supplementary financial information to the holders of the Company's publicly-traded debt instruments. The addition of the footnote does not affect any other portion of the Company's consolidated financial statements, including the Consolidated Balance Sheets, Statements of Operations and Statements of Cash Flows. As required by Rule 12b-15 under the Exchange Act, new certifications by the Company's principal executive officer and principal financial officer are filed as exhibits to this Amendment under Item 6 of Part II hereof. This Amendment solely modifies Part I Item 1 and Part II Item 6 of the Original Form 10-Q to reflect the addition of the Guarantor Footnote and does not reflect any events occurring after June 24, 2012 or modify or update the disclosures in the Original Form 10-Q that may have been affected by subsequent events. For the convenience of the reader, this Amendment sets forth the Quarterly Report on Form 10-Q, as amended, in its entirety.
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		56,604,000