Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 16,375,267	$ 16,257,694
Marketable securities	20,668,767	20,894,328
Accounts receivable, net of allowances of $929,334and $1,723,679, respectively	14,055,103	19,314,789
Prepaid expenses and other current assets	2,020,487	1,912,831
Inventory	2,193,166	1,769,007
Deferred tax assets, net	158,525	177,798
Total current assets	55,471,315	60,326,447
Property and equipment, net of accumulated depreciation of $18,652,300 and $17,797,835, respectively	3,770,298	4,364,180
Long-term marketable securities	543,824	611,082
Deferred tax assets, net	213,807	217,771
Software development costs, net	1,331,010	1,001,530
Other assets, net	2,220,106	2,183,973
Goodwill	4,150,339	4,150,339
Other intangible assets, net	185,309	191,572
Total assets	67,886,008	73,046,894
Liabilities and Stockholders' Equity
Accounts payable	2,373,333	2,883,844
Accrued expenses	13,096,846	17,609,766
Deferred revenue, net	20,421,248	19,450,966
Total current liabilities	35,891,427	39,944,576
Other long-term liabilities	2,621,727	2,587,327
Deferred revenue, net	7,433,461	7,698,053
Total liabilities	45,946,615	50,229,956
Stockholders' equity:
Preferred stock - $.001 par value, 2,000,000 shares authorized	0	0
Common stock - $.001 par value, 100,000,000 shares authorized, 55,304,402 and 54,931,397 shares issued, respectively and 47,299,167 and 46,926,162 shares outstanding, respectively	55,304	54,931
Additional paid-in capital	158,972,358	157,321,564
Accumulated deficit	(88,375,206)	(85,925,798)
Common stock held in treasury, at cost (8,005,235 and 8,005,235 shares, respectively	(46,916,339)	(46,916,339)
Accumulated other comprehensive loss, net	(1,796,724)	(1,717,420)
Total stockholders' equity	21,939,393	22,816,938
Total liabilities and stockholders' equity	$ 67,886,008	$ 73,046,894