Provision For Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Provision For Income Taxes [Abstract]
Accumulated depreciation and amortization from purchase accounting adjustments	$ (3,279,737)	$ (3,671,285)	$ (3,584,660)
Capital loss carry-forwards	167,208	167,690	271,568
Total non-current net deferred tax liabilities	(3,112,529)	(3,503,595)	(3,313,092)
Unrealized (gains) losses on investments	(67,596)	6,890	61,810
Impairment of investments	0	15,673	0
Inventory	248,633	220,408	257,963
Allowance for doubtful accounts and discounts	134,850	4,350	138,228
Capital loss carry-back	0	91,369	0
Total current deferred tax assets	315,887	338,690	458,001
Total current deferred tax assets	$ (2,796,642)	$ (3,164,905)	$ (2,855,091)