[1]

Unamortized Discounts. Original issue discounts ("OID") are amortized to interest expense using the effective interest method. The unamortized discount represents the portion of OID that will be charged to interest expense over the remaining term of the respective debt agreements.

[2]

Interest Rate. The stated interest rate is the contractual rate of interest specified in the debt agreement. For variable rate debt and amended debt agreements, the rate in effect as of March 31, 2016 is shown. For debt paid off during the three months ended March 31, 2016, the rate in effect on December 31, 2015 is shown. See also Note 7 for accounting for the fair value of compound embedded derivatives and detachable common stock purchase warrants that are bifurcated from the host debt agreement and accounted for at fair value.

[3]

Credit Agreements. In April 2015, the Company entered into credit agreements with (i) Calm Waters Partnership ("Calm Waters"), an institutional investor and (ii) a group of 15 investors (the "Additional Lenders"), on substantially identical terms, pursuant to which Calm Waters made term loans to the Company of $35,000 and the Additional Lenders made term loans of $6,214 (collectively referred to as the "April Term Loans"). In June 2015, the Company and Calm Waters entered into an amendment that provided for an additional term loan (the "June Term Loan") for $6,000. In October 2015, the Company and Calm Waters entered into an amendment that provided for an additional term loan (the "October Term Loan") for $18,000. In January 2016, the Company and Calm Waters entered into an amendment that provided for an additional term loan of $9,043 (the "January Term Loan"). The April, June, October and January Term Loans mature in April 2018 and bear interest at the rate of 12.0% per annum.