COMMON STOCK AND STOCK INCENTIVE PLANS (Details 3) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Stock Options Outstanding
Number outstanding (in shares)	930
Weighted-average exercise price per share (in dollars per share)	$ 20.04
Weighted-average remaining contractual life	3 years 1 month 10 days
Stock Options Exercisable
Number Exercisable (in shares)	643
Weighted-average exercise price per share (in dollars per share)	$ 27.39
Options exercisable and expected to vest at the end of the period
Number (in shares)	930
Weighted-average exercise price per share (in dollars per share)	$ 20.04
$ 2.97 - $ 2.97
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 2.97
Exercise price, high end of range (in dollars per share)	$ 2.97
Stock Options Outstanding
Number outstanding (in shares)	27
Weighted-average exercise price per share (in dollars per share)	$ 2.97
Weighted-average remaining contractual life	6 years 9 months 29 days
$ 3.21 - $ 3.21
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 3.21
Exercise price, high end of range (in dollars per share)	$ 3.21
Stock Options Outstanding
Number outstanding (in shares)	203
Weighted-average exercise price per share (in dollars per share)	$ 3.21
Weighted-average remaining contractual life	6 years 7 months 24 days
Stock Options Exercisable
Number Exercisable (in shares)	5
Weighted-average exercise price per share (in dollars per share)	$ 3.21
$ 4.14 - $ 4.17
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 4.14
Exercise price, high end of range (in dollars per share)	$ 4.17
Stock Options Outstanding
Number outstanding (in shares)	98
Weighted-average exercise price per share (in dollars per share)	$ 4.17
Weighted-average remaining contractual life	4 years 5 months 23 days
Stock Options Exercisable
Number Exercisable (in shares)	50
Weighted-average exercise price per share (in dollars per share)	$ 4.17
$ 6.27 - $ 6.27
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 6.27
Exercise price, high end of range (in dollars per share)	$ 6.27
Stock Options Outstanding
Number outstanding (in shares)	53
Weighted-average exercise price per share (in dollars per share)	$ 6.27
Weighted-average remaining contractual life	9 months
Stock Options Exercisable
Number Exercisable (in shares)	53
Weighted-average exercise price per share (in dollars per share)	$ 6.27
$ 6.51 - $ 6.51
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 6.51
Exercise price, high end of range (in dollars per share)	$ 6.51
Stock Options Outstanding
Number outstanding (in shares)	138
Weighted-average exercise price per share (in dollars per share)	$ 6.51
Weighted-average remaining contractual life	1 year 11 months 19 days
Stock Options Exercisable
Number Exercisable (in shares)	125
Weighted-average exercise price per share (in dollars per share)	$ 6.51
$ 8.46 - $ 9.72
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 8.46
Exercise price, high end of range (in dollars per share)	$ 9.72
Stock Options Outstanding
Number outstanding (in shares)	117
Weighted-average exercise price per share (in dollars per share)	$ 9.42
Weighted-average remaining contractual life	1 year 6 months 22 days
Stock Options Exercisable
Number Exercisable (in shares)	117
Weighted-average exercise price per share (in dollars per share)	$ 9.42
$ 10.11 - $ 18.75
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 10.11
Exercise price, high end of range (in dollars per share)	$ 18.75
Stock Options Outstanding
Number outstanding (in shares)	131
Weighted-average exercise price per share (in dollars per share)	$ 15.51
Weighted-average remaining contractual life	2 years 2 months 23 days
Stock Options Exercisable
Number Exercisable (in shares)	131
Weighted-average exercise price per share (in dollars per share)	$ 15.51
$ 19.83 - $ 93.72
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 19.83
Exercise price, high end of range (in dollars per share)	$ 93.72
Stock Options Outstanding
Number outstanding (in shares)	80
Weighted-average exercise price per share (in dollars per share)	$ 44.91
Weighted-average remaining contractual life	7 months 20 days
Stock Options Exercisable
Number Exercisable (in shares)	80
Weighted-average exercise price per share (in dollars per share)	$ 44.91
$ 112.38 - $ 112.38
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 112.38
Exercise price, high end of range (in dollars per share)	$ 112.38
Stock Options Outstanding
Number outstanding (in shares)	75
Weighted-average exercise price per share (in dollars per share)	$ 112.38
Weighted-average remaining contractual life	1 year 18 days
Stock Options Exercisable
Number Exercisable (in shares)	75
Weighted-average exercise price per share (in dollars per share)	$ 112.38
$ 135.63 - $ 135.63
COMMON STOCK AND STOCK INCENTIVE PLANS
Exercise price, low end of range (in dollars per share)	$ 135.63
Exercise price, high end of range (in dollars per share)	$ 135.63
Stock Options Outstanding
Number outstanding (in shares)	8
Weighted-average exercise price per share (in dollars per share)	$ 135.63
Weighted-average remaining contractual life	7 months 20 days
Stock Options Exercisable
Number Exercisable (in shares)	8
Weighted-average exercise price per share (in dollars per share)	$ 135.63

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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