Long-Term Debt And Credit Facilities	3 Months Ended
Mar. 31, 2018
Long-Term Debt And Credit Facilities [Abstract]
Long-Term Debt And Credit Facilities	8. Long-Term Debt and Credit Facilities The Company has had a working capital line of credit with its primary lender, Silicon Valley Bank, since 2004. The revolving line of credit is secured by substantially all of the Company’s assets. The maximum available under the line is $5.0 million subject to the value of collateralized assets. The Company is required under the revolving line of credit to maintain its primary operating account and the majority of its cash and investment balances in accounts with its primary lender. The facility was amended on March 27, 2015, extending the maturity date to March 31, 2018. On November 7, 2017, the Company and the primary lender agreed to adjust the maximum availability under the Company’s revolving line of credit from $10.0 million to $5.0 million with a pro-rata reduction in related loan costs, as well as a reduction in the interest rate floor from 7.0% to 5.75%. As of March 31, 2018, the agreement required the Company to maintain a liquidity ratio greater than 1.50:1.00, excluding certain short term advances from the calculation, and a minimum tangible net worth of not less than (no worse than) negative $24.0 million for the quarters ended June 30, 2016, September 30, 2016, December 31, 2016, March 31, 2017, June 30, 2017, and September 30, 2017; and not less than (no worse than) negative $24.5 million for the quarters ended December 31, 2017 and March 31, 2018. As of March 31, 2018, the Company had no outstanding balance under the revolving line of credit. Draws on the line of credit are made based on the borrowing capacity one week in arrears. As of March 31, 2018, the Company had a borrowing capacity of $4.5 million based on the Company’s collateralized assets. The Company’s total liquidity as of March 31, 2018, was $16.1 million which included cash and cash equivalents of $11.6 million. As of March 31, 2018, we were in compliance with all financial covenants of this agreement and we anticipate continued compliance throughout the remainder of 2018. On April 26, 2018, the Company entered into a First Amendment to Third Amended and Restated Loan and Security Agreement with Silicon Valley Bank to extend the maturity of the revolving line of credit from March 31, 2018 to April 25, 2019. The maximum availability under the revolving line of credit remains at $5.0 million, and provides for an interest rate during a “streamline period” equal to the prime rate subject to a floor of 4.5%. A “streamline period” occurs when the Company has, for each consecutive day in the immediately preceding monthly period, maintained a liquidity ratio greater than 1.75:1.00, and continuing so long as the streamline period has been maintained. Upon the termination of a streamline period, the Company must maintain the streamline threshold each consecutive day for one fiscal quarter, prior to entering into a subsequent streamline period. During non-streamline periods, the interest rate is the prime rate plus 1.5%, subject to a floor of 4.5%. In addition, the amendment eliminates the tangible net worth covenant and requires that the liquidity ratio shall at all times include not less than $1.5 million of the Borrower’s unrestricted cash and cash equivalents maintained at the Bank prior to giving effect to any advance.

8. Long-Term Debt and Credit Facilities

The Company has had a working capital line of credit with its primary lender, Silicon Valley Bank, since 2004. The revolving line of credit is secured by substantially all of the Company’s assets. The maximum available under the line is $5.0 million subject to the value of collateralized assets. The Company is required under the revolving line of credit to maintain its primary operating account and the majority of its cash and investment balances in accounts with its primary lender. The facility was amended on March 27, 2015, extending the maturity date to March 31, 2018. On November 7, 2017, the Company and the primary lender agreed to adjust the maximum availability under the Company’s revolving line of credit from $10.0 million to $5.0 million with a pro-rata reduction in related loan costs, as well as a reduction in the interest rate floor from 7.0% to 5.75%. As of March 31, 2018, the agreement required the Company to maintain a liquidity ratio greater than 1.50:1.00, excluding certain short term advances from the calculation, and a minimum tangible net worth of not less than (no worse than) negative $24.0 million for the quarters ended June 30, 2016, September 30, 2016, December 31, 2016, March 31, 2017, June 30, 2017, and September 30, 2017; and not less than (no worse than) negative $24.5 million for the quarters ended December 31, 2017 and March 31, 2018.

As of March 31, 2018, the Company had no outstanding balance under the revolving line of credit. Draws on the line of credit are made based on the borrowing capacity one week in arrears. As of March 31, 2018, the Company had a borrowing capacity of $4.5 million based on the Company’s collateralized assets. The Company’s total liquidity as of March 31, 2018, was $16.1 million which included cash and cash equivalents of $11.6 million. As of March 31, 2018, we were in compliance with all financial covenants of this agreement and we anticipate continued compliance throughout the remainder of 2018.

On April 26, 2018, the Company entered into a First Amendment to Third Amended and Restated Loan and Security Agreement with Silicon Valley Bank to extend the maturity of the revolving line of credit from March 31, 2018 to April 25, 2019. The maximum availability under the revolving line of credit remains at $5.0 million, and provides for an interest rate during a “streamline period” equal to the prime rate subject to a floor of 4.5%. A “streamline period” occurs when the Company has, for each consecutive day in the immediately preceding monthly period, maintained a liquidity ratio greater than 1.75:1.00, and continuing so long as the streamline period has been maintained. Upon the termination of a streamline period, the Company must maintain the streamline threshold each consecutive day for one fiscal quarter, prior to entering into a subsequent streamline period. During non-streamline periods, the interest rate is the prime rate plus 1.5%, subject to a floor of 4.5%. In addition, the amendment eliminates the tangible net worth covenant and requires that the liquidity ratio shall at all times include not less than $1.5 million of the Borrower’s unrestricted cash and cash equivalents maintained at the Bank prior to giving effect to any advance.