CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Revenues:    
Equipment leasing $ 9,161,668 $ 9,749,671
Administrative, field & support service revenues 480,536 482,881
Equipment sales 220,978 124,316
Royalty revenue   282,815
Total revenues 9,863,182 10,639,683
Operating expenses:    
Cost of revenues 3,122,803 3,495,918
Research and development 822,647 1,120,293
Sales, general and administrative 6,212,033 5,736,213
Total operating expenses 10,157,483 10,352,424
Operating income (loss) (294,301) 287,259
Interest income (expense):    
Interest income 2 7
Interest expense (912,391) (1,294,699)
Total interest expense (912,389) (1,294,692)
Loss before provision for income taxes (1,206,690) (1,007,433)
Provision for income taxes      
Net loss (1,206,690) (1,007,433)
Preferred stock dividends and accretion (2,036,704) (1,442,983)
Net loss available to common stockholders $ (3,243,394) $ (2,450,416)
Basic and diluted loss per common share (in dollars per share) $ (0.30) $ (0.23)
Weighted average shares of common stock outstanding (in shares) 10,929,784 10,868,372