Income Taxes (Details 1) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Assets:
Allowance for receivables	$ 100,414	$ 72,539
Deferred revenue	3,648,029	2,939,462
Share-based compensation	2,254,428	3,095,723
Accrued expenses and other liabilities	418,483	307,565
Domestic net operating loss carryforwards	30,714,934	26,023,318
Foreign net operating loss carryforwards	9,761	99,544
Tax credit carryforwards	574,997	574,997
AMT tax credit carryforwards	460,607	483,285
Capital loss carryforwards	78,296	77,586
Fixed assets	489,105	554,154
Intangibles	1,435,994	1,762,519
Sub-total	40,185,048	35,990,692
Valuation allowance	(38,800,877)	(35,121,608)
Total Deferred Tax Assets	1,384,171	869,084
Deferred Tax Liabilities:
Deferred state income tax	(923,553)	(541,359)
Foreign withholding taxes	(137,659)	(128,261)
Total Deferred Tax Liabilities	(1,061,212)	(669,620)
Net Deferred Tax Assets	$ 322,959	$ 199,464