From the 10Q
"At December 31, 2011, we had working capital of $3,591,140 compared to working capital of $2,013,352 at March 31, 2011. At December 31, 2011 we had cash on hand of $3,511,982."
Debt and Other Commitments
"We currently have no debt outstanding other than trade payables and accruals. At December 31, 2011 we had no significant purchase commitments for product and components."
From pages 18 and 19 http://www.sec.gov/Archives/edgar/data/886328/000114420412006715/v301080_10q.htm