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Note A - The Company and Summary of Significant Accounting Policies (Details) - Allowance for Doubtful Accounts (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Mar. 31, 2013
Allowance for Doubtful Accounts [Abstract]      
Balance at Beginning of Year $ 397,526 $ 11,526 $ 20,526
Charged to Costs and Expenses   386,000  
Deductions From Reserves 377,000    
Balance at End of Year $ 20,526 $ 397,526 $ 20,526