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SHARE CAPITAL (Schedule of Information about Options Outstanding) (Details) (USD $) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 6.25 | $ 6.25 |  | $ 5.52
Outstanding at December 31, 2010 | 471,854 | 454,354 | 428,367 |
Exercisable at December 31, 2010 | 113,342 | 110,142 | 109,197 |
1.72 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 1.72 | $ 1.72 | $ 1.72 |
Outstanding at December 31, 2010 | 46,004 | 46,004 | 46,004 |
Weighted average remaining contractual life years | 5.1 | 5.6 | 6.6 |
Weighted average exercise price | $ 1.72 | $ 1.72 | $ 1.72 |
Exercisable at December 31, 2010 | 46,004 | 46,004 | 46,004 |
Weighted average exercise price | $ 1.72 | $ 1.72 | $ 1.72 |
3.27 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 3.27 | $ 3.27 | $ 3.27 |
Outstanding at December 31, 2010 | 30,966 | 30,966 | 30,966 |
Weighted average remaining contractual life years | 3.4 | 3.9 | 4.9 |
Weighted average exercise price | $ 3.27 | $ 3.27 | $ 3.27 |
Exercisable at December 31, 2010 | 30,966 | 30,966 | 30,966 |
Weighted average exercise price | $ 3.27 | $ 3.27 | $ 3.27 |
3.48 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 3.48 | $ 3.48 | $ 3.48 |
Outstanding at December 31, 2010 | 4,486 | 4,486 | 4,486 |
Weighted average remaining contractual life years | 3.4 | 3.9 | 4.9 |
Weighted average exercise price | $ 3.48 | $ 3.48 | $ 3.48 |
Exercisable at December 31, 2010 | 4,486 | 4,486 | 4,486 |
Weighted average exercise price | $ 3.48 | $ 3.48 | $ 3.48 |
3.63 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 3.63 | $ 3.63 | $ 3.63 |
Outstanding at December 31, 2010 | 4,849 | 4,849 | 4,849 |
Weighted average remaining contractual life years | 5.1 | 5.6 | 6.6 |
Weighted average exercise price | $ 3.63 | $ 3.63 | $ 3.63 |
Exercisable at December 31, 2010 | 4,849 | 4,849 | 4,849 |
Weighted average exercise price | $ 3.63 | $ 3.63 | $ 3.63 |
3.84 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 3.84 | $ 3.84 | $ 3.84 |
Outstanding at December 31, 2010 | 16,580 | 16,580 | 19,908 |
Weighted average remaining contractual life years | 4.5 | 5 | 6 |
Weighted average exercise price | $ 3.84 | $ 3.84 | $ 3.84 |
Exercisable at December 31, 2010 | 16,580 | 16,580 | 19,908 |
Weighted average exercise price | $ 3.84 | $ 3.84 | $ 3.84 |
5.52 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 5.52 | $ 5.52 | $ 5.52 |
Outstanding at December 31, 2010 | 2,984 | 2,984 | 2,984 |
Weighted average remaining contractual life years | 7.1 | 7.6 | 8.6 |
Weighted average exercise price | $ 5.52 | $ 5.52 | $ 5.52 |
Exercisable at December 31, 2010 | 2,984 | 2,984 | 1,493 |
Weighted average exercise price | $ 5.52 | $ 5.52 | $ 5.52 |
6.02 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 6.02 | $ 6.02 | $ 3.02 |
Outstanding at December 31, 2010 | 4,273 | 4,273 | 4,273 |
Weighted average remaining contractual life years | 4.6 | 5.1 | 6.12 |
Weighted average exercise price | $ 6.02 | $ 6.02 | $ 6.02 |
Exercisable at December 31, 2010 | 4,273 | 4,273 | 1,491 |
Weighted average exercise price | $ 6.02 | $ 6.02 | $ 6.02 |
6.25 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 6.25 | $ 6.25 | $ 6.25 |
Outstanding at December 31, 2010 | 344,212 | 344,212 | 314,897 |
Weighted average remaining contractual life years | 8.5 | 9 | 10 |
Weighted average exercise price |  |  |  |
Exercisable at December 31, 2010 |  |  |  |
Weighted average exercise price |  |  |  |
6.25 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Exercise prices | $ 6.25 |  |  |
Outstanding at December 31, 2010 | 17,500 |  |  |
Weighted average remaining contractual life years | 8.5 |  |  |
Weighted average exercise price | $ 6.25 |  |  |
Exercisable at December 31, 2010 | 3,200 |  |  |
Weighted average exercise price | $ 6.25 |  |  |

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- Definition The per share price that the individual must pay to acquire shares under the deferred compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65 -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c) -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a, b) -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average period remaining as of the balance sheet date until option expiration pertaining to the outstanding stock options for all option plans in the customized range of exercise prices, which may be expressed in a variety of ways (for example, years, months). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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