CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 8,034,310	$ 9,041,478
Accounts receivable, net of allowance for doubtful accounts of $991,990 and $1,048,864 at December 31, 2012 and March 31, 2013, respectively.	5,269,551	5,373,023
Prepaid expenses and other current assets	1,053,860	576,112
Total current assets	14,357,721	14,990,613
Property and equipment, net	991,898	1,023,198
Intangible assets, net	555,124	575,409
Total assets	15,904,743	16,589,220
Current liabilities
Accounts payable	898,819	1,191,122
Accrued expenses	722,864	343,913
Accrued royalties	907,026	712,776
Accrued payroll and related liabilities	1,659,983	1,382,265
Capital lease obligation, current portion	150,270	158,669
Deferred revenue		483,052
Line of credit, current		1,000,000
Total current liabilities	4,338,962	5,271,797
Capital lease obligation, net of current portion	53,101	83,910
Line of credit, non-current	1,000,000
Total liabilities	5,392,063	5,355,707
Commitments and contingencies (Note 5)
Common stock classified outside of stockholders' equity (deficit)	5,500,000	11,775,724
Stockholders' equity (deficit)
Common stock, $0.01 par value; 50,000,000 shares authorized; 32,797,625 shares issued and outstanding at December 31, 2012 and March 31, 2013, respectively	278,032	232,414
Additional paid-in capital	63,101,466	56,766,036
Accumulated deficit	(58,100,968)	(57,276,664)
Accumulated other comprehensive loss	(265,850)	(263,997)
Total stockholders' equity (deficit)	5,012,680	(542,211)
Total liabilities, common stock classified outside of stockholders' equity (deficit) and stockholders' equity (deficit)	$ 15,904,743	$ 16,589,220