Valuation And Qualifying Accounts (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance For Doubtful Accounts And Returns [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 383,077	$ 640,183	$ 667,529
Additions Charged to Cost and Expenses	48,742	65,781	763
Deductions	(300,355)	(322,887)	(28,109)
Balance at the End of Year	131,464	383,077	640,183
Allowance For Inventory Valuation [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	80,213	72,639	151,157
Additions Charged to Cost and Expenses	6,970	179,803	122,783
Deductions	(27,549)	(172,229)	(201,301)
Balance at the End of Year	$ 59,634	$ 80,213	$ 72,639