EQUITY Stock option activity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
Sep. 30, 2012 years	Dec. 31, 2011
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	1,388,333
Granted	190,000
Exercised	(215,197)
Forfeited or expired	(152,803)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	1,210,333
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	944,708
Weighted Average Exercise Price Per Share - Outstanding		$ 4.17
Weighted average exercise price of options granted	$ 0
Weighted average exercise price exercised options	$ 3.18
Weighted Average Exercise Price Per Share - Forfeited or Expired	$ 5.29
Outstanding, Weighted Average Exercise Price	$ 4.82
Outstanding, Weighted Average Remaining Contractual Term	3.5
Outstanding, Intrinsic Value	$ 5,028
Exercisable Options, Weighted Average Exercise Price	$ 4.13
Exercisable Options, Weighted Average Remaining Contractual Term	4.1
Exercisable, Intrinsic Value	$ 4,526

Weighted average exercise price exercised options

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Wighted average exercise price of options granted

+ References

No definition available.

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- Definition

The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

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.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

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- Definition

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.

+ References

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- Definition

The combined weighted average exercise price associated with stock options during the period that have either lapsed or been forfeited.

+ References

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- Definition

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

+ References

No definition available.

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to options outstanding under the plan as of the balance sheet date.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

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.

+ References

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-Paragraph A240

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- Definition

The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(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.

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- Definition

The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

+ References

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- Definition

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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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

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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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The weighted average remaining life of the exercisable stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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

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