7.                       Debt Instruments

We are party to a $60.0 million credit facility with a syndicate of financial institutions, which expires on September 12, 2018. The interest rate on borrowings is either LIBOR plus 2.00% - 2.25% or an alternate base rate plus 1.00% - 1.25%, both of which are per annum rates based on outstanding borrowings. The amount of borrowings available under the credit facility at any time is based on our monthly accounts receivable balance at such time, and the amounts borrowed are collateralized by our personal property (including such accounts receivable but excluding intellectual property). Under the credit facility, we can request up to $15.0 million in letters of credit be issued by the financial institutions.

The credit facility contains customary events of default, conditions to borrowing and covenants, including restrictions on our ability to dispose of assets, make acquisitions, incur debt, incur liens and make distributions to stockholders. The credit facility also includes a financial covenant requiring the maintenance of minimum liquidity of at least $5.0 million. During the continuance of an event of a default, the lenders may accelerate amounts outstanding, terminate the credit facility and foreclose on all collateral.

As of March 31, 2014, we had no borrowings outstanding, $1.1 million in letters of credit outstanding and $58.9 million of available borrowing capacity under the credit facility.