CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 18,651,468	$ 16,257,694
Restricted cash	750,000	0
Marketable securities	10,530,942	20,894,328
Accounts receivable, net of allowances of $940,101 and $1,723,679, respectively	14,130,302	19,314,789
Prepaid expenses and other current assets	2,796,665	1,912,831
Inventory	642,819	1,769,007
Deferred tax assets, net	464,031	177,798
Total current assets	47,966,227	60,326,447
Property and equipment, net of accumulated depreciation of $16,131,570 and $17,797,835, respectively	3,980,679	4,364,180
Long-term marketable securities	0	611,082
Deferred tax assets, net	86,465	217,771
Software development costs, net	1,161,822	1,001,530
Other assets, net	2,185,148	2,183,973
Goodwill	4,150,339	4,150,339
Other intangible assets, net	174,426	191,572
Total assets	59,705,106	73,046,894
Current liabilities:
Accounts payable	2,801,372	2,883,844
Accrued expenses	16,720,582	17,609,766
Deferred revenue, net	17,831,653	19,450,966
Total current liabilities	37,353,607	39,944,576
Other long-term liabilities	2,618,818	2,587,327
Deferred tax liabilities, net	167,875	0
Deferred revenue, net	6,311,865	7,698,053
Total liabilities	46,452,165	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, 55,615,972 and 54,931,397 shares issued, respectively and 47,610,737 and 46,926,162 shares outstanding, respectively	55,616	54,931
Additional paid-in capital	162,673,833	157,321,564
Accumulated deficit	(100,910,119)	(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	(1,650,050)	(1,717,420)
Total stockholders' equity	13,252,941	22,816,938
Total liabilities and stockholders' equity	$ 59,705,106	$ 73,046,894