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INCOME TAXES (Details - Valuation Allowance) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Valuation Allowance      
Balance, beginning of the period $ 49,674us-gaap_DeferredTaxAssetsValuationAllowance $ 54,961us-gaap_DeferredTaxAssetsValuationAllowance $ 68,138us-gaap_DeferredTaxAssetsValuationAllowance
Charges to earnings (3,707)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount (5,287)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount (13,176)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Balance, end of the period 40,121us-gaap_DeferredTaxAssetsValuationAllowance 49,674us-gaap_DeferredTaxAssetsValuationAllowance 54,961us-gaap_DeferredTaxAssetsValuationAllowance
Out of period adjustment [Member]      
Valuation Allowance      
Charges to earnings $ (5,846)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
/ us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis
= us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember