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SIGNIFICANT ACCOUNTING POLICIES (Detail Textuals 2) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Jan. 23, 2013
Subsequent Event
Accounting Policies [Abstract]        
Prepaid expenses related to unamortized product brochure costs $ 264,000 $ 155,000    
Advertising expenses 2,000,000 1,353,000 1,030,000  
Net realized gains on marketable securities 290,000 64,000 28,000  
Reclassification of net realized gains from other comprehensive income 290,000 64,000 28,000  
Unrealized gain on marketable securities 332,000 354,000    
Unrealized loss on marketable securities $ 20,000 $ 29,000    
Subsequent Event [Line Items]        
Amount of dividend payable in cash per share       $ 0.03