Income Taxes (Schedule Of Components Of Deferred Tax Asset) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Abstract]
Current accruals	$ 1,687,951	$ 1,416,823
Deferred revenue	269,797
Depreciation and amortization	2,269,341	2,302,685
Deferred compensation	1,389,832	1,589,935
Net operating loss carryovers	32,744,557	30,246,136
Deferred tax assets	38,361,478	35,555,579
Valuation allowance	(37,912,693)	$ (35,555,579)
Net deferred tax assets before deferred tax liabilities	448,785
Accounting method changes	$ (448,785)
Net deferred tax assets