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

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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Period Type: | duration

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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e32123-109318 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |