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Subsequent Events. (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended |  | 1 Months Ended
--- | --- | --- | ---
Dec. 31, 2011 Dividend declared | Jan. 26, 2012 Dividend declared CVR GP, LLC | Jan. 31, 2012 Shareholder proposal and tender offer
Distribution |  |  |
Cash distribution declared (in dollars per share) |  | $ 0.588 |
Cash distribution declared |  | $ 42.9 |
Dividend |  |  |
Cash dividend of common stock approved (in dollars per share) | $ 0.08 |  |
Shareholder Proposal and Tender Offer |  |  |
Number of individuals to be nominated for election to Board Of Directors from funds affiliated with prospective buyer |  |  | $ 9

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 + Details
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- Definition The aggregate amount of dividends declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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