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EQUITY Weighted average fair value of options granted (Details) | 3 Months Ended
--- | ---
Mar. 31, 2013
Equity [Abstract] |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | 46,461

X
- Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration