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INCOME TAXES (VALUATION ALLOWANCE ROLLFORWARD TABLE) (DETAILS) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
INCOME TAXES [ABSTRACT] |  |  |
Beginning balance, deferred income tax valuation allowance | $ 10,792us-gaap_DeferredTaxAssetsValuationAllowance | $ 20,909us-gaap_DeferredTaxAssetsValuationAllowance | $ 16,555us-gaap_DeferredTaxAssetsValuationAllowance
Additions to Deferred Income Tax Expense | 946ttec_ValuationAllowanceAdditionsToDeferredTaxExpense | 4,218ttec_ValuationAllowanceAdditionsToDeferredTaxExpense | 5,560ttec_ValuationAllowanceAdditionsToDeferredTaxExpense
Reduction of Deferred Income Tax Expense | (1,017)ttec_ValuationAllowanceReductionOfDeferredIncomeTaxExpense | (14,335)ttec_ValuationAllowanceReductionOfDeferredIncomeTaxExpense | (1,206)ttec_ValuationAllowanceReductionOfDeferredIncomeTaxExpense
Ending balance, deferred income tax valuation allowance | $ 10,721us-gaap_DeferredTaxAssetsValuationAllowance | $ 10,792us-gaap_DeferredTaxAssetsValuationAllowance | $ 20,909us-gaap_DeferredTaxAssetsValuationAllowance

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- Definition Additions to the valuation allowance recorded in the income statement as an increase in deferred income taxes. + References No definition available. + Details
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- Definition Reductions to the valuation allowance recorded in the income statement as a decrease in deferred income taxes. + References No definition available. + Details
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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
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- Details
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