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SIGNIFICANT ACCOUNTING POLICIES (Detail Textuals 2) (USD $)
 12 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Selling, general and administrative expenses
Dec. 31, 2012
Selling, general and administrative expenses
Dec. 31, 2011
Selling, general and administrative expenses
Jan. 28, 2014
Subsequent Event
Dividend declared
Significant Accounting Policies [Line Items]              
Amount of dividend payable in cash per share             $ 0.03
Dividends payable, date declared             Mar. 10, 2014
Dividends payable, date of record             Feb. 10, 2014
Advertising expenses       $ 2,113,000 $ 2,000,000 $ 1,353,000  
Prepaid expenses related to unamortized product brochure costs 264,000 264,000          
Net realized gains on marketable securities 61,000 290,000 64,000        
Reclassification of net realized gains from other comprehensive income 61,000 290,000 64,000        
Gross unrealized gains on marketable securities 229,000 332,000          
Gross unrealized losses on marketable securities $ 16,000 $ 20,000