MARKETABLE SECURITIES AND ACCRUED INTEREST (Tables)

12 Months Ended

Dec. 31, 2012

Marketable Securities and Accrued Interest [Abstract]

Held-to-maturity Securities [Table Text Block]

The following is a summary of held to maturity marketable securities:

	December 31, 2011
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	cost		gains		losses			Value
Corporate debentures - Maturing between one to three  Years	$	23,823	$	46	$	(736	)	$	23,133
Accrued interest		345		-		-			345
	$	24,168	$	46	$	(736	)	$	23,478

	December 31, 2012
	Amortized		Unrealized		Fair
	cost		gains		Value
Corporate debentures:
Maturing within one year	$	7,625	$	62	$	7,687
Maturing between one to two years		15,762		299		16,061
Accrued interest		341		-		341
	$	23,728	$	361	$	24,089