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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
12 Months Ended
Dec. 31, 2011
Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

SCHEDULE II

RESEARCH FRONTIERS INCORPORATED
VALUATION AND QUALIFYING ACCOUNTS
Years ended December 31, 2011, 2010, and 2009

Balance at Charged to Balance
beginning costs and at end
      of period       expenses       Deductions       of period
Description
 
Allowance for uncollectible royalty receivables:          
 
December 31, 2011 $ 162,723 $ 0 $ 70,000 * $ 92,723
 
December 31, 2010 $ 186,568 $ 0 $ 23,845 * $ 162,723
 
December 31, 2009 $        203,674 $        2,894 $        20,000 * $        186,568
 

*Recovery of previously reserved receivables.