Income Taxes (Details 1) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Deferred Tax Assets:
Allowance for receivables	$ 35,218	$ 76,266
Deferred revenue	852,015	1,970,216
Share-based compensation	21,940	517,841
Accrued expenses and other liabilities	341,553	404,316
Domestic net operating loss carryforwards	19,405,651	19,572,148
Foreign net operating loss carryforwards	198,017	17,997
Tax credit carryforwards	3,106,022	3,106,022
AMT tax credit carryforwards	233,007	464,571
Capital loss carryforwards	31,466	57,768
Fixed assets	178,502	218,412
Interest expense carryforwards	63,823	0
Intangibles	287,547	625,126
Sub-total	24,754,761	27,030,683
Valuation allowance	(22,424,261)	(25,602,357)
Total Deferred Tax Assets	2,330,500	1,428,326
Deferred Tax Liabilities:
Prepaid commissions and other	(100,569)	0
Tax method changes	(1,227,047)	0
Deferred state income tax	(279,540)	(450,797)
Foreign withholding taxes	(481,892)	(472,112)
Total Deferred Tax Liabilities	(2,089,048)	(922,909)
Net Deferred Tax Assets	$ 241,452	$ 505,417