XML 53 R80.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

FAIR VALUE (NARRATIVE) (Details) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Dec. 31, 2018 USD ($) | Mar. 31, 2020 USD ($) | Sep. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Oct. 26, 2019 USD ($) | Apr. 30, 2018 USD ($) | Dec. 31, 2016 USD ($)
Business acquisitions, Contingent Consideration [Line Items] |  |  |  |  |  |  |  |  |  |  |
Average interest rate on annual borrowings |  |  |  |  |  | 3.40% | 3.10% |  |  |  |
Purchase Price Payable Payments During Period |  |  |  |  |  |  | $ (399) |  |  |  |
Business Combination Contingent Consideration Liability |  | $ 2,363 |  |  |  | $ 6,134 | 2,363 | $ 399 |  |  |
SCS |  |  |  |  |  |  |  |  |  |  |
Business acquisitions, Contingent Consideration [Line Items] |  |  |  |  |  |  |  |  |  |  |
Business Combination Contingent Consideration Liability |  | 2,363 |  |  |  | 0 | 2,363 | 0 |  | $ 4,100 |
Increase (decrease) in contingent consideration payable | $ 2,500 | 300 |  | $ 210 |  |  |  |  |  |  |
SCS | Discount Rate |  |  |  |  |  |  |  |  |  |  |
Business acquisitions, Contingent Consideration [Line Items] |  |  |  |  |  |  |  |  |  |  |
Business combination contingent consideration measurement input |  |  |  |  |  |  |  |  |  | 4.7 |
FCR |  |  |  |  |  |  |  |  |  |  |
Business acquisitions, Contingent Consideration [Line Items] |  |  |  |  |  |  |  |  |  |  |
Business Combination Contingent Consideration Liability |  | 0 |  |  |  | 6,134 | 0 |  | $ 10,900 |  |
Increase (decrease) in contingent consideration payable |  |  | $ 400 |  |  |  |  |  |  |  |
FCR | Discount Rate |  |  |  |  |  |  |  |  |  |  |
Business acquisitions, Contingent Consideration [Line Items] |  |  |  |  |  |  |  |  |  |  |
Business combination contingent consideration measurement input |  |  |  |  |  |  |  |  | 16.7 |  |
Welltok |  |  |  |  |  |  |  |  |  |  |
Business acquisitions, Contingent Consideration [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase Price Payable Payments During Period |  |  |  |  | $ 399 |  | (399) | 851 |  |  |
Business Combination Contingent Consideration Liability |  | $ 0 |  |  |  | $ 0 | $ 0 | $ 399 |  |  | $ 1,250

X
- Definition Payments made of purchase price payables during period. + References No definition available. + Details
Name: | ttec_PurchasePricePayablePaymentsDuringPeriod
Namespace Prefix: | ttec_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionContingentConsiderationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479 + Details
Name: | us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
Name: | us-gaap_BusinessCombinationContingentConsiderationLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Value of input used to measure contingent consideration liability from business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The effective interest rate during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=ttec_ScsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=ttec_FcrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=ttec_WeltokMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |