INTANGIBLE ASSETS, DEFERRED CHARGES (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

		Useful life	December 31,
		(years)	2011		2012
a.	Impaired Cost:
	Acquired technology	5-10	$	15,517	$	15,517
	Customer relationship	9		4,172		4,172
	Trade name	3		415		415
	Existing contracts for maintenance	3		181		181
				20,285		20,285
	Accumulated amortization:
	Acquired technology			12,575		13,399
	Customer relationship			3,129		3,433
	Trade name			415		415
	Existing contracts for maintenance			181		181
				16,300		17,428
	Amortized cost		$	3,985	$	2,857

Schedule of Expected Amortization Expense [Table Text Block]

Expected amortization expenses are as follows:

Year ending December 31,
2013	$	930
2014	$	872
2015	$	696
2016	$	359
	$	2,857