CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 5,483,379	$ 10,873,891
Marketable securities	10,582,030	10,900,722
Accounts receivable, net of allowances of $184,009 and $119,530, respectively	5,051,870	8,898,680
Prepaid expenses and other current assets	1,644,379	1,596,916
Inventory	156,871	352,493
Deferred tax assets, net	300,343	316,586
Total current assets	23,218,872	32,939,288
Property and equipment, net of accumulated depreciation of $17,668,588 and $16,867,911, respectively	1,821,390	2,147,188
Deferred tax assets, net	7,503	7,503
Software development costs, net	1,128,553	1,508,517
Other assets	1,154,717	1,373,964
Goodwill	4,150,339	4,150,339
Other intangible assets, net	260,004	196,037
Total assets	31,741,378	42,322,836
Current liabilities:
Accounts payable	1,387,493	1,266,504
Accrued expenses	7,418,471	6,939,198
Deferred tax liabilities, net	23,307	23,307
Deferred revenue, net	15,502,480	23,380,012
Total current liabilities	24,331,751	31,609,021
Other long-term liabilities	717,200	630,444
Deferred tax liabilities, net	252,298	226,443
Deferred revenue, net	9,260,148	13,097,215
Total liabilities	$ 34,561,397	$ 45,563,123
Commitments and contingencies
Series A redeemable convertible preferred stock, $.001 par value, 2,000,000 shares authorized, 900,000 shares issued and outstanding, redemption value of $9,000,000	$ 7,661,884	$ 7,230,941
Stockholders' deficit:
Common stock - $.001 par value, 100,000,000 shares authorized, 56,710,637 and 56,360,222 shares issued, respectively and 41,182,567 and 40,924,313 shares outstanding, respectively	56,711	56,360
Additional paid-in capital	167,165,710	166,933,291
Accumulated deficit	(119,042,274)	(119,054,530)
Common stock held in treasury, at cost (15,528,070 and 15,435,909 shares, respectively)	(57,032,917)	(56,895,059)
Accumulated other comprehensive loss, net	(1,629,133)	(1,511,290)
Total stockholders' deficit	(10,481,903)	(10,471,228)
Total liabilities and stockholders' deficit	$ 31,741,378	$ 42,322,836