$
,979,863$   35,248,819Accounts receivable, net of allowance of $386,153 and $367,536 in 2011 and 2010, respectively

4,533,99013,915,569Current portion of long-term receivables

64,27130,800Inventories

5,866,5065,441,475Prepaid expenses and other current assets

3,314,8104,557,718Total current assets

30,759,44059,194,381Property and equipment, net

3,634,1853,840,622Intangible assets

2,354,1112,578,986Long-term receivables

81,514109,266Other assets

41,82138,537Total assets

$
36,871,071$   65,761,792Liabilities and stockholders' equity (deficit)Current liabilities:   Current maturities of long-term debt

$
28,992,163$   20,894,091   Accounts payable

7,006,4958,796,182   Accrued liabilities

6,153,0886,966,571   Deferred contract revenue

8,180,8016,600,313   Warrants

289,9763,541,798Total current liabilities

50,622,52346,798,955Long-term debt, less current maturities

-8,000,000Long-term deferred contract revenue

335,296478,850Other liabilities

3,0948,741Stockholders' equity (deficit):Preferred stock, par value $0.001; 10,000,000 shares authorized at 2011 and 2010; none outstanding at 2011 and 2010

--Common stock, par value $0.001; 100,000,000 shares authorized at 2011 and 2010; 55,408,312 and 54,746,240 issued at 2011 and 2010, respectively

55,40854,746   Additional paid-in capital

355,954,708354,002,770   Treasury stock, 40,151 shares at 2011 and 2010