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SEGMENT INFORMATION (SEGMENT FINANCIALS) (DETAILS) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross Revenue |  |  |  |  |  |  |  |  | $ 1,241,817ttec_GrossRevenueSegmentInformation | $ 1,195,553ttec_GrossRevenueSegmentInformation | $ 1,169,408ttec_GrossRevenueSegmentInformation
Intersegment Sales |  |  |  |  |  |  |  |  | (36)ttec_IntersegmentSales | (2,396)ttec_IntersegmentSales | (6,427)ttec_IntersegmentSales
Net Revenue | 338,170us-gaap_SalesRevenueServicesNet | 305,900us-gaap_SalesRevenueServicesNet | 295,490us-gaap_SalesRevenueServicesNet | 302,221us-gaap_SalesRevenueServicesNet | 318,087us-gaap_SalesRevenueServicesNet | 296,995us-gaap_SalesRevenueServicesNet | 289,692us-gaap_SalesRevenueServicesNet | 288,383us-gaap_SalesRevenueServicesNet | 1,241,781us-gaap_SalesRevenueServicesNet | 1,193,157us-gaap_SalesRevenueServicesNet | 1,162,981us-gaap_SalesRevenueServicesNet
Depreciation and amortization | 15,386us-gaap_DepreciationAndAmortization | 13,893us-gaap_DepreciationAndAmortization | 14,089us-gaap_DepreciationAndAmortization | 13,170us-gaap_DepreciationAndAmortization | 12,783us-gaap_DepreciationAndAmortization | 11,463us-gaap_DepreciationAndAmortization | 11,263us-gaap_DepreciationAndAmortization | 10,555us-gaap_DepreciationAndAmortization | 56,538us-gaap_DepreciationAndAmortization | 46,064us-gaap_DepreciationAndAmortization | 41,166us-gaap_DepreciationAndAmortization
Income (Loss) from Operations | 30,128us-gaap_OperatingIncomeLoss | 21,323us-gaap_OperatingIncomeLoss | 20,667us-gaap_OperatingIncomeLoss | 24,357us-gaap_OperatingIncomeLoss | 32,765us-gaap_OperatingIncomeLoss | 25,961us-gaap_OperatingIncomeLoss | 19,675us-gaap_OperatingIncomeLoss | 22,998us-gaap_OperatingIncomeLoss | 96,475us-gaap_OperatingIncomeLoss | 101,399us-gaap_OperatingIncomeLoss | 78,545us-gaap_OperatingIncomeLoss
Capital Expenditures |  |  |  |  |  |  |  |  | 67,641us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 50,364us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 40,653us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Total Assets | 852,475us-gaap_Assets |  |  |  | 842,342us-gaap_Assets |  |  |  | 852,475us-gaap_Assets | 842,342us-gaap_Assets | 851,630us-gaap_Assets
Goodwill | 128,705us-gaap_Goodwill |  |  |  | 102,743us-gaap_Goodwill |  |  |  | 128,705us-gaap_Goodwill | 102,743us-gaap_Goodwill | 98,241us-gaap_Goodwill
Customer Management Services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross Revenue |  |  |  |  |  |  |  |  | 923,497ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 892,145ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 923,774ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember
Intersegment Sales |  |  |  |  |  |  |  |  | 0ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | (1,262)ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 0ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember
Net Revenue |  |  |  |  |  |  |  |  | 923,497us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 890,883us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 923,774us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 40,577us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 33,884us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 32,714us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember
Income (Loss) from Operations |  |  |  |  |  |  |  |  | 76,792us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 75,689us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 60,271us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember
Capital Expenditures |  |  |  |  |  |  |  |  | 49,630us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 40,007us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 32,736us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember
Total Assets | 514,957us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember |  |  |  | 554,015us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember |  |  |  | 514,957us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 554,015us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 588,627us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember
Goodwill | 25,871us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember |  |  |  | 19,819us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember |  |  |  | 25,871us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 19,819us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember | 20,288us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerManagementServicesMember
Customer Growth Services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross Revenue |  |  |  |  |  |  |  |  | 115,434ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 100,996ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 100,846ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember
Intersegment Sales |  |  |  |  |  |  |  |  | 0ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 0ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | (74)ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember
Net Revenue |  |  |  |  |  |  |  |  | 115,434us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 100,996us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 100,772us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 6,048us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 4,127us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 3,904us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember
Income (Loss) from Operations |  |  |  |  |  |  |  |  | 7,255us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 3,024us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 2,258us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember
Capital Expenditures |  |  |  |  |  |  |  |  | 3,195us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 3,421us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 3,983us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember
Total Assets | 88,394us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember |  |  |  | 86,416us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember |  |  |  | 88,394us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 86,416us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 54,164us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember
Goodwill | 30,395us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember |  |  |  | 30,128us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember |  |  |  | 30,395us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 30,128us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember | 24,439us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerGrowthServicesMember
Customer Technology Services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross Revenue |  |  |  |  |  |  |  |  | 139,218ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 152,769ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 101,430ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember
Intersegment Sales |  |  |  |  |  |  |  |  | (36)ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | (284)ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | (4,582)ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember
Net Revenue |  |  |  |  |  |  |  |  | 139,182us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 152,485us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 96,848us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 7,489us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 6,201us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 3,026us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember
Income (Loss) from Operations |  |  |  |  |  |  |  |  | 4,519us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 19,965us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 15,714us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember
Capital Expenditures |  |  |  |  |  |  |  |  | 14,423us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 6,450us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 3,390us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember
Total Assets | 159,441us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember |  |  |  | 157,040us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember |  |  |  | 159,441us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 157,040us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 152,500us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember
Goodwill | 42,709us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember |  |  |  | 42,709us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember |  |  |  | 42,709us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 42,709us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember | 42,153us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerTechnologyServicesMember
Customer Strategy Services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross Revenue |  |  |  |  |  |  |  |  | 63,668ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 49,643ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 43,358ttec_GrossRevenueSegmentInformation / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember
Intersegment Sales |  |  |  |  |  |  |  |  | 0ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | (850)ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | (1,771)ttec_IntersegmentSales / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember
Net Revenue |  |  |  |  |  |  |  |  | 63,668us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 48,793us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 41,587us-gaap_SalesRevenueServicesNet / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 2,424us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 1,852us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 1,522us-gaap_DepreciationAndAmortization / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember
Income (Loss) from Operations |  |  |  |  |  |  |  |  | 7,909us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 2,721us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 302us-gaap_OperatingIncomeLoss / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember
Capital Expenditures |  |  |  |  |  |  |  |  | 393us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 486us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 544us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember
Total Assets | 89,683us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember |  |  |  | 44,871us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember |  |  |  | 89,683us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 44,871us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | 56,339us-gaap_Assets / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember
Goodwill | $ 29,730us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember |  |  |  | $ 10,087us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember |  |  |  | $ 29,730us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | $ 10,087us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember | $ 11,361us-gaap_Goodwill / ttec_ComponentsOfReportableSegmentsAxis = ttec_CustomerStrategyServicesMember

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