STOCK-BASED COMPENSATION Defined contribution plan and non-cash employer-matching contributions (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Discolusre of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation arrangement award vesting period			5 years
Defined contribution pan, maximum annual contribution per employee percent			15.00%
Defined contribution plan, employer matching contribution percent			3.00%
Expense recognized for the 401(k) plan	$ 144	$ 176	$ 511	$ 584
Number of shares of the Company's common stock issued	0	0	124	92
Market value per share of the Company's common stock on contribution date (in dollars)	$ 0.00	$ 0.00	$ 5.35	$ 6.55
Non-cash contribution made for employer matching liability	$ 0	$ 0	$ 666	$ 602

Defined Contribution Plan, Employer Discretionary Non-cash Contribution Made for Employer Matching Liability

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- Definition

Stock Issued During Period, Per Share, Employee Benefit Plan

+ References

No definition available.

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 11

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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No definition available.

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Maximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan.

+ 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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Number of shares issued during the period to an employee benefit plan, such as a defined contribution or defined benefit plan.

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