| **Note 4. Credit Facility**  | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
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| Debt Disclosure [Text Block] | 4.                  CREDIT      FACILITYIn March 2013,      the Company entered into a seventh loan modification      agreement and amended its loan and security agreement (the      "Revised Credit Facility") with Silicon Valley Bank ("SVB").      Under this Revised Credit Facility, the expiration date of      the facility remained at August 12, 2013 and the revolving      line of credit (the "Revolving Line") was reduced from $3.0      million to $2.0 million. Available borrowings under the      Revolving Line was changed from 80% of eligible accounts      receivable to 80% of eligible accounts receivable less the      amount of principal outstanding under the term loan that      forms part of the Revised Credit Facility, as described      below. The Revolving Line continues to bear interest at a      floating annual rate equal to SVB's prime rate ("Prime")      +1.75%. The Company also has a term loan with SVB, that was      unchanged under the Revised Credit Facility, whereby advances      were available to be drawn through December 31, 2012 in      minimum amounts of $0.25 million.At March 31,      2013, available borrowings under the Revolving Line were      approximately $1.4 million but no borrowings were      outstanding. During the fourth quarter of 2012, the Company      took two advances of $0.35 million each from the term loan      and the balance outstanding at March 31, 2013 was $0.6      million. The term loan bears interest at Prime +2.25% (which      was 6.25% at March 31, 2013) and principal and interest are      being repaid over thirty months. Interest expense related to      the term loan was $10 thousand for the three months ended      March 31, 2013.Pursuant to the      Revised Credit Facility, the financial covenants were      modified. The Company is required to maintain financial      covenants based on an adjusted quick ratio ("AQR") of at      least 1.2 to 1.0, measured at each calendar month-end, and      the minimum tangible net worth covenant was replaced by a      maximum EBITDA loss/profitability covenant (tested at quarter      end) effective with the first quarter of 2013. Additionally,      if the Company's AQR falls below 1.5x at any month-end during      the remaining term of the facility, then any borrowings under      the Revolving Line will be repaid by SVB applying collections      from the Company's SVB collateral account (for receipts by      wire) and SVB lockbox account (for receipts by check) to      reduce the revolving loan balance on a daily basis, until      such time as the month-end AQR is again 1.5x or greater. If      the AQR at month-end is 1.5x or greater, the Company will      maintain a static loan balance and all collections will be      deposited into the Company's operating account. The Company      was in compliance with its financial covenants as of March      31, 2013. As is usual and customary in such lending      agreements, the agreements also contain certain non-financial      requirements, such as required periodic reporting to the bank      and various representations and warranties. The lending      agreement also restricts the Company's ability to pay      dividends without the bank's consent.The Revised      Credit facility is collateralized by the Company's assets,      except for (i) its intellectual property rights which are      subject to a negative pledge arrangement with the bank, and      (ii) any equipment whose purchase is financed by any other      lender or lessor, solely to the extent the security agreement      with such lender or lessor prohibits junior liens on such      equipment, and only until the lien held by such lender or      lessor is terminated or released with respect to such      equipment. |

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| - Definition
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.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -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.
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