SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 150,000	$ 160,000	$ 150,000
Additions Charged to Cost and Expenses	120,000	117,000	33,000
Less Deductions	(85,000)	(127,000)	(23,000)
Balance at end of year	185,000	150,000	160,000
Sales Return Allowance [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	30,000	45,000	45,000
Additions Charged to Cost and Expenses	45,000	30,000	0
Less Deductions	(20,000)	(45,000)	0
Balance at end of year	55,000	30,000	45,000
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	120,000	115,000	105,000
Additions Charged to Cost and Expenses	75,000	87,000	33,000
Less Deductions	(65,000)	(82,000)	(23,000)
Balance at end of year	$ 130,000	$ 120,000	$ 115,000