STOCK-BASED COMPENSATION Stock options activity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility		75.10%
Risk free interest rate		2.30%
Dividends		0.00%
Expected life (years)		6 years 3 months
Weighted average fair value of options granted during the period		$ 3.50
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock options outstanding - remaining contractual term	4 years 4 months 24 days	5 years 1 month 5 days
Stock options exercisable - remaining contractual term	2 years 6 months	3 years 4 months 23 days
Stock options outstanding	$ 0	$ 0
Stock options exercisable	$ 0	$ 0
Share-based compensation arrangement expiration period	10 years
Share-based compensation arrangement award vesting period	5 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price fair market value of the underlying stock on the date of grant	100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options outstanding at January 1, weighted average exercise price per share	$ 11.36	$ 12.64	$ 12.79
Granted, weighted average exercise price per share	$ 0.00	$ 5.18	$ 0.00
Expired, weighted average exercise price per share	$ 12.55	$ 10.47	$ 13.86
Options outstanding at December 31, weighted average exercise price per share	$ 11.21	$ 11.36	$ 12.64
Options exercisable at December 31, weighted average exercise price per share	$ 14.09	$ 13.96	$ 12.71
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding at January 1, number of options outstanding	1,396,350	1,548,300	1,763,250
Granted, number of options outstanding	0	400,000	0
Expired, number of options outstanding	(157,700)	(551,950)	(214,950)
Options outstanding at December 31, number of options outstanding	1,238,650	1,396,350	1,548,300
Options exercisable at December 31, number of options outstanding	838,650	983,850	1,508,000
Share-based compensation arrangement award vesting period	4 years

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period After Grant Date

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- Definition

Stock Option Award Exercise Price as a Percentage of the Fair Market Value of a Share of Common Stock

+ References

No definition available.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

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.

+ References

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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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- Definition

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

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- Definition

The range of expected volatilities used and the weighted-average expected volatility for an entity using a valuation technique with different volatilities during the contractual term.

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- Definition

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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- 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.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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

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

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- Definition

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

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No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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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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- 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.

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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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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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