COMMON STOCK AND STOCK INCENTIVE PLANS (Details 4) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
COMMON STOCK AND STOCK INCENTIVE PLANS
Market value of shares as reported by NASDAQ	$ 3.09
Unrecognized compensation cost related to unvested stock options and restricted stock and restricted stock units
Unrecognized compensation cost	$ 2.8	$ 3.7	$ 2.8
Expected weighted-average period of unrecognized cost	3 years 3 months 14 days	2 years 11 months 23 days	2 years 3 months
Stock options
COMMON STOCK AND STOCK INCENTIVE PLANS
Weighted average remaining contractual life of options exercisable	1 year 7 months 17 days
Weighted average remaining contractual life of options expected to vest	3 years 1 month 10 days
Weighted average fair value of options granted (in dollars per share)	$ 1.97	$ 1.71	$ 3.90
Fair values of stock-based payment awards estimated using the Black-Scholes option pricing model
Expected term	4 years 7 months 6 days	2 years 10 months 6 days	3 years 11 months 12 days
Weighted average risk-free interest rate (as a percent)	0.56%	0.58%	1.40%
Expected dividend rate (as a percent)	0.00%	0.00%	0.00%
Volatility (as a percent)	79.00%	75.00%	83.00%

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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

-Publisher FASB

-Name Accounting Standards Codification

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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Price of a single share of a number of saleable stocks of a company.

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