STOCK-BASED COMPENSATION Stock options activity (Details) (Stock options, USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average service period	0 years 10 months 13 days
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 202
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	$ 11.21	$ 11.36
Granted, weighted average exercise price per share	$ 0.00	$ 0.00
Expired, weighted average exercise price per share	$ 7.95	$ 15.29
Options outstanding at June 30, weighted average exercise price per share	$ 11.80	$ 11.32
Options exercisable at June 30, weighted average exercise price per share	$ 13.36	$ 13.94
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding at January 1, number of Options Outstanding	1,238,650	1,396,350
Granted, number of options outstanding	0	0
Expired, number of options outstanding	(188,200)	(14,700)
Options outstanding at June 30, number of Options Outstanding	1,050,450	1,381,650
Options exercisable at June 30, number of options outstanding	850,450	969,150

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

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-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 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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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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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.

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

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

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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 can acquire the shares reserved for issuance on stock options awarded.

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