Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 19,288,340	$ 18,651,468
Restricted cash	750,000	750,000
Marketable securities	8,073,108	10,530,942
Accounts receivable, net of allowances of $276,302 and $940,101, respectively	11,150,323	14,130,302
Prepaid expenses and other current assets	1,636,891	2,796,665
Inventory	919,390	642,819
Deferred tax assets, net	358,092	464,031
Total current assets	42,176,144	47,966,227
Property and equipment, net of accumulated depreciation of $16,022,230 and $16,131,570, respectively	3,317,344	3,980,679
Deferred tax assets, net	49,651	86,465
Software development costs, net	1,796,075	1,161,822
Other assets	1,549,255	2,185,148
Goodwill	4,150,339	4,150,339
Other intangible assets, net	179,596	174,426
Total assets	53,218,404	59,705,106
Current liabilities:
Accounts payable	1,024,180	2,801,372
Accrued expenses	8,658,863	16,720,582
Deferred tax liabilities, net	18,005	0
Deferred revenue, net	18,148,268	17,831,653
Total current liabilities	27,849,316	37,353,607
Liabilities, Noncurrent [Abstract]
Other long-term liabilities	617,300	2,618,818
Deferred tax liabilities, net	193,705	167,875
Deferred revenue, net	11,602,177	6,311,865
Total liabilities	40,262,498	46,452,165
Commitments and contingencies
Stockholders' equity:
Common stock - $.001 par value, 100,000,000 shares authorized, 56,036,972 and 55,615,972 shares issued, respectively and 48,031,737 and 47,610,737 shares outstanding, respectively	56,037	55,616
Additional paid-in capital	166,683,726	162,673,833
Accumulated deficit	(111,842,709)	(100,910,119)
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	(1,762,387)	(1,650,050)
Total stockholders' equity	6,218,328	13,252,941
Total liabilities and stockholders' equity	53,218,404	59,705,106
Series A redeemable convertible preferred stock
Liabilities, Noncurrent [Abstract]
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	$ 6,737,578	$ 0