SHARE-BASED COMPENSATION (Details) (USD $)	9 Months Ended
Sep. 30, 2012
Stock option
Summary of stock option activity for the stock option plans
Outstanding at the beginning of the period (in shares)	40,166
Changes during the period
Granted (in shares)	304,959
Expired (in shares)	(8,105)
Forfeited (in shares)	(36,307)
Outstanding at the end of the period (in shares)	300,713
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 428.16
Changes during the period
Granted (in dollars per share)	$ 14.31
Expired (in dollars per share)	$ 180.49
Forfeited (in dollars per share)	$ 14.31
Outstanding at the end of the period (in dollars per share)	$ 65.11
Weighted-average assumptions
Expected volatility (as a percent)	77.20%
Risk free interest rate (as a percent)	1.80%
Expected dividends (as a percent)	1.00%
Expected life	8 years
Weighted average fair value (in dollars per share)	$ 9.67
Restricted stock awards and units
Activity of restricted stock awards and units
Nonvested at the beginning of the period (in shares)	1,015,304
Changes during the period:
Granted (in shares)	267,653
Vested (in shares)	(196,485)
Forfeited (in shares)	(79,593)
Nonvested at the end of the period (in shares)	1,006,879
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 14.86
Changes during the period:
Granted (in dollars per share)	$ 14.25
Vested (in dollars per share)	$ 15.67
Forfeited (in dollars per share)	$ 14.23
Nonvested at the end of the period (in dollars per share)	$ 14.59

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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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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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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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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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 price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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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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