SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for Doubtful Accounts
Valuation and Qualifying Accounts
Balance at Beginning of Period	$ 29,473	$ 23,231	$ 31,472
Additions	9,659	8,527	2,927
(Deductions)	(12,875)	(2,285)	(11,168)
Balance at End of Period	26,257	29,473	23,231
Inventory Reserve
Valuation and Qualifying Accounts
Balance at Beginning of Period	39,803	59,633	32,455
Additions	37,009	18,501	56,748
(Deductions)	(49,233)	(38,332)	(29,570)
Balance at End of Period	27,579	39,803	59,633
Deferred Tax Asset Valuation Allowance
Valuation and Qualifying Accounts
Balance at Beginning of Period	19,726,000	11,963,000	10,930,000
Additions	18,540,000	7,763,000	1,033,000
Balance at End of Period	$ 38,266,000	$ 19,726,000	$ 11,963,000