Note 6 - Credit Agreement	12 Months Ended
Note 6 - Credit Agreement	Dec. 31, 2011
Notes To Financial Statements
Debt Disclosure [Text Block]	Note 6 - Credit Agreement The Company and its subsidiary, Coral Blood Services, Inc., are party to a Credit Agreement with Wells Fargo Bank (“Wells Fargo”), dated December 9, 2009, as amended to date (the “Credit Agreement”), pursuant to which Wells Fargo has issued a letter of credit that the Company uses as security for lease obligations associated with its Van Nuys facility. The Company is required to maintain a letter of credit under the lease, initially in the amount of $815,000 and reducing by 10% each year on August 14, 2009, 2010, 2011 and 2012, and 20% each year on August 14, 2013 and 2014. At December 31, 2011, the letter of credit was for $594,000 and at December 31, 2010, the letter of credit was for $660,000. The Company has no other outstanding borrowings under the Credit Agreement, and is not eligible to borrower any additional amounts under the Credit Agreement. The Credit Agreement expires on December 1, 2012. As security for the letter of credit, the Company has pledged $594,000 in cash to Wells Fargo, which is restricted as of December 31, 2011. Management has determined that, based on the lease obligation to provide this letter of credit as security for the lease, the 90% portion of the restricted cash that will not be released within the next year should be reported on the balance sheet for both 2011 and 2010 as a long term asset.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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