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Transactions with Olympus Corporation (Details) (USD $) | 1 Months Ended |  | 3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2010 | Oct. 31, 2010 | May 31, 2009 | Mar. 31, 2009 | Aug. 31, 2008 | Mar. 31, 2013 | Mar. 31, 2013 Cytori [Member] | Dec. 31, 2012 Cytori [Member] | Aug. 31, 2008 Olympus Corporation [Member] | Aug. 31, 2006 Olympus Corporation [Member] | Dec. 31, 2005 Olympus Corporation [Member] | Mar. 31, 2013 Olympus Corporation [Member] | Mar. 31, 2013 Olympus-Cytori, Inc. Joint Venture [Member] | Dec. 31, 2012 Olympus-Cytori, Inc. Joint Venture [Member]
Initial investment by Olympus Corporation in Cytori [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  | $ 6,000,000 | $ 11,000,000 | $ 11,000,000 |  |  |
Common stock issued (in shares) | 7,020,000 | 1,428,571 | 4,600,000 | 1,864,783 | 4,771,174 | 1,053,000 |  |  |  | 1,000,000 | 1,900,000 |  |  |  |
Sale of stock, price per share (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 6.00 | $ 5.75 |  |  |  |
Warrants issued to purchase shares of common stock (in shares) |  |  |  | 3,263,380 | 6,679,644 |  |  |  |  | 500,000 |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  |  | $ 2.62 | $ 2.59 |  |  |  |  | $ 8.50 |  |  |  |  |
Beneficial Owner, ownership percentage (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  | 5.97% |  |
Formation of the Olympus-Cytori Joint Venture [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Joint Venture investment carrying value |  |  |  |  |  |  |  |  |  |  |  |  |  | 37,000 |
Put Option [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Put option, repurchase floor |  |  |  |  |  |  | 22,000,000 |  |  |  |  |  |  |  |
Option liability | 2,250,000 |  |  |  |  |  | 2,500,000 |  |  |  |  |  |  |  |
Fair Value Inputs [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility (in hundredths) |  |  |  |  |  |  |  | 78.80% | 79.40% |  |  |  |  | 78.80% | 79.40%
Bankruptcy recovery rate for Cytori (in hundredths) |  |  |  |  |  |  |  | 28.00% | 28.00% |  |  |  |  |  |
Bankruptcy threshold for Cytori |  |  |  |  |  |  |  | $ 15,995,000 | $ 12,622,000 |  |  |  |  |  |
Probability of a change of control event for Cytori (in hundredths) |  |  |  |  |  |  |  | 1.44% | 1.54% |  |  |  |  |  |
Expected correlation between fair values Cytori and the Joint Venture in the future (in hundredths) |  |  |  |  |  |  |  | 46.00% | 46.00% |  |  |  |  |  |
Risk free interest rate (in hundredths) |  |  |  |  |  |  |  | 1.87% | 1.78% |  |  |  |  |  |

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