Income Taxes Deferred Taxes (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets:
Allowance for receivables	$ 52,439	$ 35,218
Deferred revenue	383,920	852,015
Share-based compensation	25,127	21,940
Accrued expenses and other liabilities	232,777	341,553
Domestic net operating loss carryforwards	20,761,781	19,405,651
Foreign net operating loss carryforwards	187,328	198,017
Tax credit carryforwards	3,106,022	3,106,022
AMT tax credit carryforwards	116,504	233,007
Capital loss carryforwards	32,109	31,466
Fixed assets	179,534	178,502
Interest expense carryforwards	94,674	63,823
Deferred Tax Assets Lease Liability	494,030	0
Intangibles	176,210	287,547
Sub-total	25,842,455	24,754,761
Valuation allowance	(23,613,642)	(22,424,261)
Total Deferred Tax Assets	2,228,813	2,330,500
Deferred Tax Liabilities:
Prepaid commissions and other	(134,618)	(100,569)
Tax method changes	(913,496)	(1,227,047)
Deferred Tax Liabilities, Leasing Arrangements	(387,740)	0
Deferred state income tax	(470,545)	(279,540)
Foreign withholding taxes	(496,093)	(481,892)
Total Deferred Tax Liabilities	(2,402,492)	(2,089,048)
Deferred Tax Liabilities, Net	$ (173,679)
Net Deferred Tax Assets		$ 241,452