LIABILITY FOR EMPLOYEES RIGHT UPON RETIREMENT (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
Jun. 30, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
LIABILITY FOR EMPLOYEES RIGHT UPON RETIREMENT [Abstract]
Percent of salary, monthly deposits	8.33%
Severance pay expenses	$ 117	$ 155	$ 114	$ 78
Defined contribution plan expenses	96	197	90	82
Gain (loss) on amounts funded in respect of employee rights upon retirement	6	(8)	11	10
Expected contribution cost in 2013	$ 198

The net increase or decrease of changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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