EQUITY Stock option activity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	1,311,397
Granted	46,461
Exercised	0
Forfeited or expired	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	1,357,858
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	1,010,688
Weighted Average Exercise Price Per Share - Outstanding		$ 5.20
Weighted average exercise price of options granted	$ 7.19
Weighted average exercise price exercised options	$ 0.00
Weighted Average Exercise Price Per Share - Forfeited or Expired	$ 0.00
Outstanding, Weighted Average Exercise Price	$ 5.27
Outstanding, Weighted Average Remaining Contractual Term	4 years 0 months 26 days
Outstanding, Intrinsic Value	$ 3,076
Exercisable Options, Weighted Average Exercise Price	$ 4.40
Exercisable Options, Weighted Average Remaining Contractual Term	4 years 4 months 24 days
Exercisable, Intrinsic Value	$ 2,984
Risk-free interest rate	1.30%
Expected term of options, in years	6 years 8 months
Expected annual volatility	57.00%
Expected dividend yield	2.00%

Weighted average exercise price exercised options

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Wighted average exercise price of options granted

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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