Bank Line Of Credit	6 Months Ended
Jun. 30, 2011
Bank Line Of Credit
Bank Line Of Credit	6. Bank Line of Credit On February 28, 2010, the Company amended its existing revolving line of credit agreement with Comerica Bank. The maximum that can be borrowed under the agreement is $7.5 million. The line expires on December 31, 2011. Borrowing under the line of credit bears interest at a "daily adjusting LIBOR rate". Borrowings under the line are subject to reporting covenants requiring the provision of financial statements to Comerica, and, as amended, financial covenants requiring the Company to maintain a minimum adjusted quick ratio of 1.15 and positive net worth. The agreement includes a letter of credit sublimit not to exceed $1.0 million. At June 30, 2011, the Company had an outstanding letter of credit for $103,000. There were no borrowings outstanding on the line of credit at June 30, 2011, and the Company was in compliance with all its covenants.

- 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.

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