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Stockholders' Equity (Details) (USD $)
 1 Months Ended 3 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended 0 Months Ended 0 Months Ended 9 Months Ended
Oct. 31, 2010
May 31, 2009
Mar. 31, 2009
Sep. 30, 2012
Dec. 31, 2011
Aug. 31, 2008
Sep. 30, 2012
Green Hospital Supply, Inc [Member]
Dec. 31, 2011
Green Hospital Supply, Inc [Member]
Sep. 30, 2012
Olympus-Cytori, Inc. Joint Venture [Member]
Sep. 30, 2011
Olympus-Cytori, Inc. Joint Venture [Member]
Sep. 30, 2012
Olympus-Cytori, Inc. Joint Venture [Member]
Sep. 30, 2011
Olympus-Cytori, Inc. Joint Venture [Member]
Aug. 31, 2008
Olympus Corporation [Member]
Aug. 31, 2006
Olympus Corporation [Member]
Sep. 30, 2012
Olympus Corporation [Member]
Dec. 31, 2011
Olympus Corporation [Member]
Dec. 13, 2010
Astellas Pharma Inc. [Member]
Dec. 31, 2011
Astellas Pharma Inc. [Member]
Jul. 11, 2011
Seaside 88, LP [Member]
Sep. 30, 2012
Seaside 88, LP [Member]
Sep. 30, 2012
Warrants issued August 2008 [Member]
Common Stock [Abstract]                                          
Proceeds from private placement of stock                                 $ 10,000,000   $ 6,000,000 $ 18,233,000  
Common stock issued (in shares) 4,600,000 1,864,783 4,771,174                   1,000,000 1,900,000     1,428,571   1,326,262 5,826,262  
Sale of stock, price per share (in dollars per share)                         $ 6 $ 5.75     $ 7   $ 4.52    
Deferred revenues       5,147,000 5,244,000                         2,526,000      
Common stock purchase agreement, terms                                     On July 11, 2011, we entered into a common stock purchase agreement with Seaside 88, LP relating to the offering and sale of a total of up to 6,326,262 shares of our common stock. The agreement required us to issue and Seaside to buy 1,326,262 shares of our common stock at an initial closing and 250,000 shares of our common stock once every two weeks, commencing 30 days after the initial closing, for up to an additional 20 closings, subject to the satisfaction of customary closing conditions. At the initial closing, the offering price was $4.52, which equaled to 88% of our common stock's volume-weighted average trading prices, or VWAP, during the ten-day trading period immediately prior to the initial closing date, raising approximately $6,000,000 in gross proceeds. At subsequent closings, the offering price was 90.25% of our common stock's volume-weighted average trading prices during the ten-day trading period immediately prior to each subsequent closing date.    
Warrant Adjustments [Abstract]                                          
Common stock issued (in shares) 4,600,000 1,864,783 4,771,174                   1,000,000 1,900,000     1,428,571   1,326,262 5,826,262  
Warrants issued to purchase shares of common stock (in shares)   3,263,380 6,679,644                   500,000               2,021,543
Warrant exercise price (in dollars per share)   $ 2.62 $ 2.59     $ 8.50                             $ 5.73
Other Related Party Transactions [Line Items]                                          
Equity method investment, ownership percentage (in hundredths)             5.10% 5.30%             6.80% 7.10%          
Direct operating cost, royalty expense                 22,000 54,000 73,000 116,000                  
Purchases from related party                     $ 1,048,000                    
Variable Interest Entity, Ownership Percentage                             50.00%