CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 12,154,409	$ 16,257,694
Marketable securities	13,201,701	20,894,328
Accounts receivable, net of allowances of $1,527,939 and $1,723,679, respectively	10,965,296	19,314,789
Prepaid expenses and other current assets	4,716,228	1,912,831
Inventory	721,827	1,769,007
Deferred tax assets, net	175,624	177,798
Total current assets	41,935,085	60,326,447
Property and equipment, net of accumulated depreciation of $19,907,079 and $17,797,835, respectively	4,387,606	4,364,180
Long-term marketable securities	489,999	611,082
Deferred tax assets, net	205,879	217,771
Software development costs, net	1,243,885	1,001,530
Other assets, net	2,207,272	2,183,973
Goodwill	4,150,339	4,150,339
Other intangible assets, net	190,106	191,572
Total assets	54,810,171	73,046,894
Current liabilities:
Accounts payable	1,514,250	2,883,844
Accrued expenses	11,063,649	17,609,766
Deferred revenue, net	17,526,719	19,450,966
Total current liabilities	30,104,618	39,944,576
Other long-term liabilities	4,433,219	2,587,327
Deferred revenue, net	6,098,952	7,698,053
Total liabilities	40,636,789	50,229,956
Commitments and contingencies
Stockholders' equity:
Preferred stock - $.001 par value, 2,000,000 shares authorized	0	0
Common stock - $.001 par value, 100,000,000 shares authorized, 55,552,911 and 54,931,397 shares issued, respectively and 47,547,676 and 46,926,162 shares outstanding, respectively	55,553	54,931
Additional paid-in capital	161,539,252	157,321,564
Accumulated deficit	(98,563,843)	(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	(1,941,241)	(1,717,420)
Total stockholders' equity	14,173,382	22,816,938
Total liabilities and stockholders' equity	$ 54,810,171	$ 73,046,894