From the 10K, long term debt is 0. Total liabilities are $19.7m, all short term, comprised mainly of $8.9m accts payable (mostly to Cognate I'm guessing, of which 50% will be converted to $4 warrants), and $8.7m warrant liability (which is an accounting device; warrants are either exercised, which brings cash into the company, or expire worthless).
Remember in late 2012, in conjunction with the reverse split and uplisting to Nasdaq, the balance sheet was comprehensively cleaned up.