TTEC (TTEC) 10-Q 9 Nov 22 2022 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Nov. 02, 2022
Document and Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-11919
Entity Registrant Name	TTEC Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	84-1291044
Entity Address, Address Line One	9197 South Peoria Street
Entity Address, City or Town	Englewood
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80112
City Area Code	303
Local Phone Number	397-8100
Title of 12(b) Security	Common stock of TTEC Holdings, Inc., $0.01 par value per share
Trading Symbol	TTEC
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		47,219,507
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001013880
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 172,274,000	$ 158,205,000
Accounts receivable, net	384,793,000	357,310,000
Prepaids and other current assets	136,282,000	134,333,000
Income and other tax receivables	47,736,000	48,139,000
Total current assets	741,085,000	697,987,000
Long-term assets
Property, plant and equipment, net	181,343,000	168,404,000
Operating lease assets	93,658,000	90,180,000
Goodwill	805,592,000	739,481,000
Deferred tax assets, net	19,530,000	11,130,000
Other intangible assets, net	242,887,000	212,349,000
Other long-term assets	70,942,000	77,273,000
Total long-term assets	1,413,952,000	1,298,817,000
Total assets	2,155,037,000	1,996,804,000
Current liabilities
Accounts payable	98,496,000	70,415,000
Accrued employee compensation and benefits	141,220,000	156,324,000
Other accrued expenses	72,571,000	63,369,000
Income taxes payable	7,150,000	9,471,000
Deferred revenue	90,916,000	95,608,000
Current operating lease liabilities	38,918,000	44,460,000
Other current liabilities	12,931,000	4,749,000
Total current liabilities	462,202,000	444,396,000
Long-term liabilities
Line of credit	955,000,000	791,000,000
Deferred tax liabilities, net	4,324,000	5,335,000
Non-current Income Taxes Payable	11,227,000	17,486,000
Non-current operating lease liabilities	69,269,000	64,419,000
Other long-term liabilities	72,996,000	79,827,000
Total long-term liabilities	1,112,816,000	958,067,000
Total liabilities	1,575,018,000	1,402,463,000
Redeemable noncontrolling interest	55,696,000	56,316,000
Stockholders' equity
Preferred stock - $0.01 par value: 10,000,000 shares authorized; zero shares outstanding as of September 30, 2022 and December 31, 2021	0	0
Common stock - $0.01 par value; 150,000,000 shares authorized; 47,213,561 and 46,990,031 shares outstanding as of September 30, 2022 and December 31, 2021, respectively	472,000	470,000
Additional paid-in capital	363,699,000	361,135,000
Treasury stock at cost: 34,838,692 and 35,062,222 shares as of September 30, 2022 and December 31, 2021, respectively	(593,337,000)	(597,031,000)
Accumulated other comprehensive income (loss)	(151,904,000)	(98,426,000)
Retained earnings	888,880,000	856,065,000
Noncontrolling interest	16,513,000	15,812,000
Total stockholders' equity	524,323,000	538,025,000
Total liabilities and stockholders' equity	$ 2,155,037,000	$ 1,996,804,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Stockholders' equity
Accounts Receivable, Allowance for Credit Loss, Current	$ 5,855	$ 5,409
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares outstanding	47,213,561	46,990,031
Treasury stock, shares	34,838,692	35,062,222

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Consolidated Statements of Comprehensive Income
Revenue.	$ 592,453	$ 566,734	$ 1,785,429	$ 1,660,747
Type of Revenue	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember
Operating expenses
Cost of services (exclusive of depreciation and amortization presented separately below)	$ 450,454	$ 447,786	$ 1,361,179	$ 1,236,769
Selling, general and administrative	75,226	67,426	206,831	181,483
Depreciation and amortization	27,117	25,280	80,061	70,655
Restructuring charges, net	1,113	485	4,261	2,612
Impairment losses	2,939	(268)	13,299	3,949
Total operating expenses	556,849	540,709	1,665,631	1,495,468
Income from operations	35,604	26,025	119,798	165,279
Other income (expense)
Interest income	519	171	990	580
Interest expense	(10,565)	(3,504)	(20,525)	(8,687)
Other income (expense), net	3,946	3,288	11,317	3,537
Total other income (expense)	(6,100)	(45)	(8,218)	(4,570)
Income before income taxes	29,504	25,980	111,580	160,709
Benefit from (provision for) income taxes	(4,489)	(7,939)	(19,797)	(35,271)
Net income	25,015	18,041	91,783	125,438
Net income attributable to noncontrolling interest	(2,766)	(3,606)	(10,896)	(13,216)
Net income (loss) attributable to TTEC stockholders	22,249	14,435	80,887	112,222
Other comprehensive income (loss)
Foreign currency translation adjustments	(23,123)	(14,186)	(46,197)	(17,676)
Derivative valuation, gross	(4,430)	(8,314)	(12,096)	(11,760)
Derivative valuation, tax effect	1,150	2,164	3,138	3,056
Other, net of tax	70	23	424	35
Total other comprehensive income (loss)	(26,333)	(20,313)	(54,731)	(26,345)
Total comprehensive income (loss)	(1,318)	(2,272)	37,052	99,093
Less: Comprehensive income attributable to noncontrolling interest	(2,929)	(2,549)	(8,678)	(9,251)
Comprehensive income (loss) attributable to TTEC stockholders	$ (4,247)	$ (4,821)	$ 28,374	$ 89,842
Weighted average shares outstanding
Basic	47,207	46,984	47,087	46,857
Diluted	47,314	47,348	47,354	47,372
Weighted Average Share Counts
Basic	$ 0.47	$ 0.31	$ 1.72	$ 2.40
Diluted	0.47	0.30	1.71	2.37
Common Stock, Dividends, Per Share, Declared	$ 0.52	$ 0.47	$ 0.52	$ 0.47

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity and Mezzanine Equity - USD ($) $ in Thousands	Stockholders' Equity of the Company Common Stock [Member]	Stockholders' Equity of the Company Treasury Stock [Member]	Stockholders' Equity of the Company Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss)	Stockholders' Equity of the Company Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Common stock beginning balance, share at Dec. 31, 2020	46,737,000
Beginning balance, value at Dec. 31, 2020	$ 467		$ 360,293	$ (72,156)	$ 757,312	$ 13,060	$ 457,762
Beginning balance at Dec. 31, 2020		$ (601,214)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)					112,222	9,329	121,551
Dividends to shareholders					(42,217)		(42,217)
Dividends distributed to noncontrolling interest						(6,390)	(6,390)
Foreign currency translation adjustments				(17,598)		(78)	(17,676)
Derivatives valuation, net of tax				(8,704)			(8,704)
Vesting of restricted stock units, share	251,000
Vesting of restricted stock units, value	$ 3	4,163	(15,535)				(11,369)
Equity-based compensation expense			11,969				11,969
Other, net of tax.				35			35
Ending balance at Sep. 30, 2021		(597,051)
Common stock ending balance, share at Sep. 30, 2021	46,988,000
Ending balance, value at Sep. 30, 2021	$ 470		356,727	(98,423)	827,317	15,921	504,961
Temporary Equity, Beginning Balance at Dec. 31, 2020							52,976
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity, Net Income							3,887
Temporary equity distributions.							(1,669)
Temporary Equity, Ending Balance at Sep. 30, 2021							55,194
Common stock beginning balance, share at Jun. 30, 2021	46,893,000
Beginning balance, value at Jun. 30, 2021	$ 469		358,423	(78,328)	834,967	15,397	532,301
Beginning balance at Jun. 30, 2021		(598,627)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)					14,435	2,767	17,202
Dividends to shareholders					(22,085)		(22,085)
Dividends distributed to noncontrolling interest						(2,025)	(2,025)
Foreign currency translation adjustments				(13,968)		(218)	(14,186)
Derivatives valuation, net of tax				(6,150)			(6,150)
Vesting of restricted stock units, share	95,000
Vesting of restricted stock units, value	$ 1	1,576	(6,266)				(4,689)
Equity-based compensation expense			4,570				4,570
Other, net of tax.				23			23
Ending balance at Sep. 30, 2021		(597,051)
Common stock ending balance, share at Sep. 30, 2021	46,988,000
Ending balance, value at Sep. 30, 2021	$ 470		356,727	(98,423)	827,317	15,921	504,961
Temporary Equity, Beginning Balance at Jun. 30, 2021							54,800
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity, Net Income							839
Temporary equity distributions.							(445)
Temporary Equity, Ending Balance at Sep. 30, 2021							$ 55,194
Preferred stock beginning balance, share at Dec. 31, 2021							0
Common stock beginning balance, share at Dec. 31, 2021	46,990,000						46,990,031
Beginning balance, value at Dec. 31, 2021	$ 470		361,135	(98,426)	856,065	15,812	$ 538,025
Beginning balance at Dec. 31, 2021		(597,031)					(597,031)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)					80,887	9,931	90,818
Dividends to shareholders					(48,072)		(48,072)
Dividends distributed to noncontrolling interest						(7,977)	(7,977)
Foreign currency translation adjustments				(44,944)		(1,253)	(46,197)
Derivatives valuation, net of tax				(8,958)			(8,958)
Vesting of restricted stock units, share	224,000
Vesting of restricted stock units, value	$ 2	3,694	(10,676)				(6,980)
Equity-based compensation expense			13,240				13,240
Other, net of tax.				424			$ 424
Preferred stock ending balance, share at Sep. 30, 2022							0
Ending balance at Sep. 30, 2022		(593,337)					$ (593,337)
Common stock ending balance, share at Sep. 30, 2022	47,214,000						47,213,561
Ending balance, value at Sep. 30, 2022	$ 472		363,699	(151,904)	888,880	16,513	$ 524,323
Temporary Equity, Beginning Balance at Dec. 31, 2021							56,316
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity, Net Income							964
Temporary equity distributions.							(1,584)
Temporary Equity, Ending Balance at Sep. 30, 2022							55,696
Common stock beginning balance, share at Jun. 30, 2022	47,093,000
Beginning balance, value at Jun. 30, 2022	$ 471		364,251	(125,450)	891,185	15,913	551,039
Beginning balance at Jun. 30, 2022		(595,331)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)					22,249	2,808	25,057
Dividends to shareholders					(24,554)		(24,554)
Dividends distributed to noncontrolling interest						(2,329)	(2,329)
Foreign currency translation adjustments				(23,244)		121	(23,123)
Derivatives valuation, net of tax				(3,280)			(3,280)
Vesting of restricted stock units, share	121,000
Vesting of restricted stock units, value	$ 1	1,994	(5,910)				(3,915)
Equity-based compensation expense			5,358				5,358
Other, net of tax.				70			$ 70
Preferred stock ending balance, share at Sep. 30, 2022							0
Ending balance at Sep. 30, 2022		$ (593,337)					$ (593,337)
Common stock ending balance, share at Sep. 30, 2022	47,214,000						47,213,561
Ending balance, value at Sep. 30, 2022	$ 472		$ 363,699	$ (151,904)	$ 888,880	$ 16,513	$ 524,323
Temporary Equity, Beginning Balance at Jun. 30, 2022							55,752
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity, Net Income							(42)
Temporary equity distributions.							(14)
Temporary Equity, Ending Balance at Sep. 30, 2022							$ 55,696

Consolidated Statement of Sto_2

Consolidated Statement of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Consolidated statement of stockholders' equity and mezzanine equity [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.52	$ 0.47	$ 1.02	$ 0.90

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net income	$ 91,783	$ 125,438
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	80,061	70,655
Amortization of contract acquisition costs	1,345	575
Amortization of debt issuance costs	735	719
Imputed interest expense and fair value adjustments to contingent consideration, net	2,070	1,046
Provision for credit losses	1,561	(34)
(Gain) loss on disposal of assets	1,587	524
Impairment losses	13,299	3,949
Deferred income taxes	(8,216)	514
Excess tax benefit from equity-based awards	(1,256)	(5,284)
Equity-based compensation expense	13,240	11,969
(Gain) loss on foreign currency derivatives	$ 269	$ 134
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other nonoperating income expense	Other nonoperating income expense
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	$ (37,987)	$ 48,816
Prepaids and other assets	38,594	(42,455)
Accounts payable and accrued expenses	1,483	19,406
Deferred revenue and other liabilities	(79,755)	(60,910)
Net cash provided by operating activities	118,813	175,062
Cash flows from investing activities
Proceeds from sale of long-live assets	189	42
Purchases of property, plant and equipment	(64,564)	(40,778)
Acquisitions, net of cash acquired of zero and $18,638, respectively	(142,420)	(481,718)
Net cash used in investing activities	(206,795)	(522,454)
Cash flows from financing activities
Net proceeds (borrowings) from line of credit	164,000	420,000
Payments on other debt	(2,568)	(5,288)
Payments of contingent consideration and hold back payments to acquisitions	(9,600)	(11,517)
Dividends paid to shareholders	(23,518)	(20,132)
Payments to noncontrolling interest	(9,562)	(8,059)
Tax payments related to issuance of restricted stock units	(6,980)	(11,369)
Payments of debt issuance costs	0	(1,102)
Net cash (used in) provided by financing activities	111,772	362,533
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(22,226)	(6,272)
Increase (decrease) in cash, cash equivalents and restricted cash	1,564	8,869
Cash, cash equivalents and restricted cash, beginning of period	180,682	159,015
Cash, cash equivalents and restricted cash, end of period	182,246	167,884
Supplemental disclosures
Cash paid for interest	19,699	7,827
Cash paid for income taxes	32,705	64,999
Non-cash investing and financing activities
Acquisition of long lived assets through finance leases	461	857
Acquisition of equipment through increase in accounts payable, net	6,625	130
Dividends declared but not paid	$ 24,554	$ 22,085

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from investing activities
Cash acquired from acquisition	$ 0	$ 18,638

OVERVIEW AND BASIS OF PRESENTAT

OVERVIEW AND BASIS OF PRESENTATION	9 Months Ended
	Sep. 30, 2022
OVERVIEW AND BASIS OF PRESENTATION [Abstract]
OVERVIEW AND BASIS OF PRESENTATION	(1) OVERVIEW AND BASIS OF PRESENTATION Summary of Business TTEC Holdings, Inc. (“TTEC”, “the Company”; pronounced “T-TEC”) is a leading global customer experience as a service (“CXaaS”) partner for many of the world’s most iconic and disruptive brands. TTEC designs, builds, orchestrates, and delivers seamless digitally enabled customer experiences that are designed to increase brand value, customer loyalty, revenue and profitability through personalized, outcome-based interactions. The Company helps clients improve their customer satisfaction while lowering their total cost to serve by combining innovative digital solutions with service capabilities that deliver a frictionless customer experience (“CX”) across different channels and phases of the customer lifecycle. TTEC’s 62,700 employees serve clients in the automotive, communication, financial services, national/federal and state and local governments, healthcare, logistics, media and entertainment, e-tail/retail, technology, travel and transportation industries via operations in the United States, Australia, Belgium, Brazil, Bulgaria, Canada, Costa Rica, Germany, Greece, India, Ireland, Mexico, the Netherlands, New Zealand, the Philippines, Poland, Singapore, South Africa, Thailand, and the United Kingdom. The Company operates and reports its financial results of operation through two business segments: TTEC Digital and TTEC Engage. ● TTEC Digital is one of the largest pure-play CX technology service providers with expertise in CX strategy, digital consulting, and transformation enabled by proprietary CX applications and technology partnerships. TTEC Digital designs, builds, and operates robust digital experiences for clients and their customers through the contextual integration and orchestration of customer relationship management (“CRM”), data, analytics, CXaaS technology, and intelligent automation to ensure high-quality, scalable CX outcomes. ● TTEC Engage provides the digitally enabled CX managed services to support our clients’ end-to-end customer interaction delivery at scale. The segment delivers omnichannel customer care, tech support, order fulfillment, customer acquisition, growth, and retention services with industry specialization and distinctive CX capabilities for hypergrowth brands. TTEC Engage also delivers digitally enabled back office and industry specific specialty services including artificial intelligence (“AI”) operations, content moderation, and fraud management services. TTEC Digital and TTEC Engage strategically come together under our unified offering, Humanify ® ® Basis of Presentation The Consolidated Financial Statements are comprised of the accounts of TTEC, its wholly owned subsidiaries, its 55% equity owned subsidiary Percepta, LLC, its 70% equity owned subsidiary First Call Resolution, LLC and its 70% equity owned subsidiary Serendebyte, Inc. All intercompany balances and transactions have been eliminated in consolidation. The unaudited Consolidated Financial Statements do not include all of the disclosures required by accounting principles generally accepted in the U.S. (“GAAP”), pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The unaudited Consolidated Financial Statements reflect all adjustments which, in the opinion of management, are necessary to state fairly the consolidated financial position of the Company and the consolidated results of operations and comprehensive income (loss) and the consolidated cash flows of the Company. All such adjustments are of a normal, recurring nature. Operating results for the periods presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. These unaudited Consolidated Financial Statements should be read in conjunction with the Company’s audited Consolidated Financial Statements and footnotes thereto included in the Company’s Annual Report on Form 10-K Use of Estimates The preparation of the Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions in determining the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the Consolidated Financial Statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates including those related to derivatives and hedging activities, income taxes including the valuation allowance for deferred tax assets, litigation reserves, restructuring reserves, allowance for credit losses, contingent consideration, redeemable noncontrolling interest, and valuation of goodwill, long-lived and intangible assets. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ materially from these estimates under different assumptions or conditions. Cash, Cash Equivalents and Restricted Cash Cash and cash equivalents consist of cash, primarily held in interest-bearing investments, and liquid short-term investments, which have original maturities of less than 90 days. Restricted cash includes cash whereby the Company’s ability to use the funds at any time is contractually limited or is generally designated for specific purposes arising out of certain contractual or other obligations. The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the Condensed Consolidated Balance Sheets that sum to the amounts reported in the Condensed Consolidated Statement of Cash Flows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2022 December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ ​ $ 172,274 $ 158,205 ​ Restricted cash included in "Prepaid and other current assets" ​ ​ 9,972 ​ 22,477 ​ Total ​ ​ $ 182,246 $ 180,682 ​ ​ Concentration of Credit Risk The Company is exposed to credit risk in the normal course of business, primarily related to accounts receivable and derivative instruments. Historically, the losses related to credit risk have been immaterial. The Company regularly monitors its credit risk to mitigate the possibility of current and future exposures resulting in a loss. The Company evaluates the creditworthiness of its clients prior to entering into an agreement to provide services and as necessary through the life of the client relationship. The Company does not believe it is exposed to more than a nominal amount of credit risk in its derivative hedging activities, as the Company diversifies its activities across eight investment-grade financial institutions. Recently Adopted Accounting Pronouncements In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805), “Accounting for Contract Assets and Contract Liabilities from Contracts with Customers”, which now requires the acquirer to account for revenue contracts in accordance with Topic 606 as if it had acquired the contract, versus recording these assets and liabilities at fair value on acquisition date. The ASU is effective for interim and annual periods beginning on or after December 15, 2022, with early adoption permitted. The Company adopted the new guidance during the fourth quarter of 2021 which required application to all acquisitions completed during the adoption year. See further discussion in Note 2. Other Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform” (Topic 848), which provides optional expedients and exceptions for contracts, hedging relationships, and other transactions affected by reference rate reform due to the anticipated cessation of the London Interbank Offered Rate (”LIBOR”). The ASU is effective from March 12, 2020, may be applied prospectively and could impact the accounting for LIBOR provisions in the Company’s credit facility agreement. In addition, in January 2021, the FASB issued ASU 2021-01, “Reference Rate Reform – Scope,” which clarified the scope of ASC 848 relating to contract modifications. The Company has not yet adopted the standard but does not expect that the adoption of this guidance will have a material impact on the Company’s financial position, results of operations or cash flows.

ACQUISITIONS

ACQUISITIONS	9 Months Ended
	Sep. 30, 2022
ACQUISITIONS [ABSTRACT]
ACQUISITIONS	(2) ACQUISITIONS AND DIVESTITURES Certain Assets of Faneuil On April 1, 2022, the Company completed an asset acquisition through its subsidiary TTEC Government Solutions LLC, of certain public sector citizen experience contracts in the transportation infrastructure and healthcare exchange industries from Faneuil, Inc., a subsidiary of ALJ Regional Holdings, Inc. (“the Faneuil Transaction”). The business is operated as part of the TTEC Engage segment and was fully consolidated into the financial statements of TTEC. The Faneuil Transaction was recorded as a business combination under ASC 805, Business Combinations, with identifiable assets acquired and liabilities assumed recorded at their estimated fair values as of the acquisition date. Total cash paid at acquisition was $142.4 million. In addition, Faneuil granted to TTEC Government Solutions LLC a three-year call right and right of first offer to purchase certain other assets of Faneuil in its utilities and commercial healthcare verticals as well as certain proprietary technology. The Faneuil Transaction includes two contingent payments anticipated to be paid in early 2024 which are based on the revenue and EBITDA performance of one contract and one potential contract. The fair value of the two contingent payments has been estimated using a Monte Carlo model. The model was based on current expected EBITDA performance for the two specific client programs, a discount rate of 7.6% related to revenue and a discount rate of 19.3% related to EBITDA, a volatility rate of 20%, and an adjusted risk-free rate of 1.7%. The potential payments range from a minimum of zero to an unlimited maximum. Based on the model, a combined $8.8 million expected future payment was calculated and recorded as of the acquisition date. During the third quarter of 2022, a $2.4 million net gain was recorded related to fair value adjustments for the estimated contingent payments based on the timing of cash flows and market interest rates which resulted in an updated discount factor for one contract and a complete reduction for the second contract as it was not awarded to the Company. The benefit was included in Other income (expense) in the Consolidated Statements of Comprehensive Income (Loss). As of September 30, 2022, the contingent payment is accrued at $6.4 million and is included in Other long-term liabilities in the accompanying Consolidated Balance Sheets. The Faneuil Transaction included a call option providing the right but not the obligation to purchase additional assets in the utilities and commercial healthcare verticals based on trailing twelve-month revenue plus an additional earn-out payment based on newly added contracts. A second call option provided the right to purchase a software intangible asset and related support functions based on trailing twelve-month revenue. These call options were valued based on information including the call right and the exclusivity period and a $0.3 million asset was recorded as of the acquisition date which is included in Other long-term assets in the accompanying Consolidated Balance Sheets. The fair value was unchanged as of September 30, 2022. The Faneuil Transaction included an indemnity escrow which was disbursed as a holdback payment on the acquisition date. The indemnity payments relate to real estate and technology funds that will be spent post-close related to various IT upgrades and real estate expenses, and indemnity related to potential future employee wage increases. The indemnity payments were valued based on a weighted average of several current scenarios and a receivable of $10.4 million was recorded as of the acquisition date. During the third quarter of 2022, a reduction in the fair value was calculated and a $4.4 million expense was recorded related to a fair value adjustment for the receivable based on current information reflecting a better outcome with the contract negotiations. The reduction in fair value related expense was included in Other income (expense) in the Consolidated Statements of Comprehensive Income (Loss). As of September 30, 2022, the fair value of the receivable is $0.5 million and is included in Other current assets in the accompanying Consolidated Balance Sheets. A multi-period excess earnings method under the income approach was used to estimate the fair value of the customer relationships intangible assets. The significant assumptions utilized in calculating the fair value of the customer relationships intangible assets were the customer attrition rate, revenue growth rates, forecasted EBITDA, contributory asset charge, and the discount rate. The following summarizes the estimated fair values of the identifiable assets acquired and liabilities assumed as of the acquisition date (in thousands): ​ ​ ​ ​ ​ ​ Preliminary ​ ​ Estimate of ​ ​ Acquisition Date ​ ​ Fair Value Cash ​ $ — ​ Accounts receivable, net ​ 704 ​ Prepaid and other assets ​ 8,420 ​ Net fixed assets ​ ​ 5,622 ​ Right of use lease assets ​ ​ 16,526 ​ Other assets ​ ​ 3,824 ​ Customer relationships ​ ​ 61,310 ​ Goodwill ​ ​ 75,902 ​ ​ ​ $ 172,308 ​ ​ ​ ​ ​ ​ Accrued employee compensation ​ $ 202 ​ Accrued expenses ​ 2,763 ​ Right of use lease liability - current ​ 3,129 ​ Right of use lease liability - non-current ​ ​ 13,601 ​ Deferred income ​ ​ 811 ​ Other liabilities ​ 9,382 ​ ​ ​ $ 29,888 ​ ​ ​ ​ ​ ​ Total purchase price ​ $ 142,420 ​ ​ The estimates of fair value of identifiable assets and liabilities assumed are preliminary, pending finalization of the valuation, lease evaluation, and tax returns, thus are subject to revisions that may result in adjustments to the values presented above. The Faneuil customer relationships have been estimated based on the initial valuation and will be amortized over an estimated useful life of 10 years. The goodwill recognized from the Faneuil acquisition is estimated to be attributable, but not limited to, the acquired workforce and expected synergies with the TTEC Engage segment. The tax basis of the acquired intangibles and goodwill will be materially deductible for income tax purposes. The acquired goodwill and intangibles and operating results of Faneuil are reported within the TTEC Engage segment from the date of acquisition. Avtex On April 8, 2021, the Company acquired, through its subsidiary TTEC Digital, LLC, 100% of the outstanding stock of Avtex Solutions Holdings, LLC (“Avtex”). Avtex is an end-to-end customer experience and CXaaS solutions provider with offerings in Genesys and Microsoft cloud solutions. The business is operated as part of the TTEC Digital segment and was fully consolidated into the financial statements of TTEC. Total cash paid at acquisition was $499.946 million ($490.0 million base purchase price plus cash, less debt and working capital estimate). The Avtex transaction is subject to customary representations and warranties, holdbacks, and a net working capital adjustment. The Company used cash from operations and drew down on its Credit Facility to fund the acquisition. The Company finalized the net working capital adjustment for $0.1 million during the third quarter of 2021 which was paid by Avtex to the Company in the third quarter of 2021. During the fourth quarter of 2021, TTEC implemented ASU 2021-08 which required an accounting modification to the deferred revenue balance as of the acquisition date (see discussion above in Note 1). The deferred revenue balance was evaluated as if TTEC had been the company securing the initial contracts and accounted for these contracts in accordance with ASC 606. Based on this re-assessment, the $4.9 million reduction initially recorded to deferred revenue in connection with the purchase price accounting was eliminated and an offsetting increase to Goodwill was recorded as of the acquisition date. In connection with this modification, revenue of $3.4 million was recorded in the fourth quarter of 2021 related to deferred revenue from the second and third quarters of 2021. A multi-period excess earnings method under the income approach was used to estimate the fair value of the customer relationships intangible asset. The significant assumptions utilized in calculating the fair value of the customer relationships intangible asset were the customer attrition rate, revenue growth rates, forecasted EBITDA, contributory asset charge, and the discount rate. The following summarizes the fair values of the identifiable assets acquired and liabilities assumed as of the acquisition date (in thousands): ​ ​ ​ ​ ​ ​ ​ Acquisition Date ​ ​ Fair Value Cash ​ $ 18,638 ​ Accounts receivable, net ​ 22,214 ​ Prepaid expenses ​ 26,389 ​ Current income tax receivables ​ ​ 93 ​ Net fixed assets ​ ​ 3,162 ​ Right of use lease assets ​ ​ 3,614 ​ Other assets ​ ​ 480 ​ Tradename ​ ​ 5,300 ​ Intellectual property intangible ​ ​ 770 ​ Customer relationships ​ ​ 128,200 ​ Goodwill ​ ​ 378,882 ​ ​ ​ $ 587,742 ​ ​ ​ ​ ​ ​ Accounts payable ​ $ 20,580 ​ Accrued employee compensation ​ 4,325 ​ Accrued expenses ​ ​ 250 ​ Right of use lease liability - current ​ ​ 678 ​ Deferred revenue ​ 56,765 ​ Accrued income taxes ​ ​ 332 ​ Deferred tax liability ​ ​ 1,930 ​ Right of use lease liability - noncurrent ​ 2,936 ​ ​ ​ $ 87,796 ​ ​ ​ ​ ​ ​ Total purchase price ​ $ 499,946 ​ ​ In the first quarter of 2022, the Company finalized the valuation of Avtex for the acquisition date assets acquired and liabilities assumed and determined that no material adjustments to any of the balances were required. The Avtex customer relationships, intellectual property intangible, and tradename are being amortized over useful lives of 9, 3, and 1 years, respectively. The goodwill recognized from the Avtex acquisition is attributable, but not limited to, the acquired workforce and expected synergies with the TTEC Digital segment. The tax basis of the acquired intangibles and goodwill will be materially deductible for income tax purposes. The acquired goodwill and intangibles and operating results of Avtex are reported within the TTEC Digital segment from the date of acquisition. Financial Impact of Acquired Businesses The acquired businesses purchased in 2021 and 2022 noted above contributed revenues of $96.0 million and net income of $6.0 million to the Company for the three months ended September 30, 2022 and revenues of $243.6 million and net income $16.2 million to the Company for the nine months ended September 30, 2022. The unaudited proforma financial results for the three and nine months ended September 30, 2022 combines the consolidated results of the Company, Avtex and Faneuil assuming the acquisitions had been completed on January 1, 2021. The reported revenue and net income of $592.5 million and $22.2 million would have been $592.5 million and $22.2 million for the three months ended September 30, 2022, respectively, on an unaudited proforma basis. The reported revenue and net income of $1,785.4 million and $80.9 million would have been $1,827.4 million and $85.4 million for the nine months ended September 30, 2022, respectively, on an unaudited proforma basis. The Company did not have any material, nonrecurring proforma adjustments directly attributable to the business combinations included in the reported proforma revenue earnings. These proforma amounts have been calculated after applying the Company’s accounting policies and adjusting the respective acquired businesses’ results to reflect the additional depreciation and amortization that would have been charged assuming the fair value adjustments to property, plant and equipment, and intangible assets had been applied from the date indicated, with the consequential tax effects. The unaudited proforma consolidated results are not to be considered indicative of the results if these acquisitions occurred in the periods mentioned above, or indicative of future operations or results. Additionally, the proforma consolidated results do not reflect any anticipated synergies expected as a result of the acquisitions.

SEGMENT INFORMATION

SEGMENT INFORMATION	9 Months Ended
	Sep. 30, 2022
SEGMENT INFORMATION [ABSTRACT]
SEGMENT INFORMATION	(3) SEGMENT INFORMATION The Company reports the following two segments: TTEC Digital ● Technology Services: Our technology services design, integrate, and operate highly scalable, digital omnichannel technology solutions in the cloud, on premise, or hybrid environment, including journey orchestration, automation and AI, knowledge management, and workforce productivity. ● Professional Services: Our management consulting practices deliver customer experience strategy, analytics, process optimization, and learning and performance services. TTEC Engage ● Customer Acquisition, Growth, and Retention Services: Our customer growth and acquisition services optimize the buying journeys for acquiring new customers by leveraging technology and analytics to deliver personal experiences that we believe increase the quantity and quality of leads and customers. ● Customer Care, Tech Support, and Order Fulfillment Services: Our customer care, technical support, and order fulfillment services provide turnkey contact center solutions, including digital omnichannel technologies, associate recruiting and training, facilities, and operational expertise to create exceptional customer experiences across all touchpoints. ● Digitally Enabled Back Office and Specialty Services: Our digital AI operations, content moderation, and fraud detection and prevention services provide clients with data tagging and annotation capabilities to train and enable AI platforms, community content moderation, and compliance to meet client content standards, and proactive fraud solutions to assist our clients in the detection and prevention of fraud. The Company allocates to each segment its portion of corporate operating expenses. All intercompany transactions between the reported segments for the periods presented have been eliminated. The following tables present certain financial data by segment (in thousands): Three Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Depreciation Income ​ ​ Gross ​ Intersegment ​ Net ​ & ​ from ​ ​ Revenue ​ Sales ​ Revenue ​ Amortization ​ Operations TTEC Digital ​ $ 117,973 ​ $ (35) ​ $ 117,938 ​ $ 7,645 ​ $ 8,070 ​ TTEC Engage ​ 474,515 ​ — ​ 474,515 ​ 19,472 ​ 27,534 ​ Total ​ $ 592,488 ​ $ (35) ​ $ 592,453 ​ $ 27,117 ​ $ 35,604 ​ ​ Three Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Depreciation Income ​ ​ Gross ​ Intersegment ​ Net ​ & ​ from ​ ​ Revenue ​ Sales ​ Revenue ​ Amortization ​ Operations TTEC Digital ​ $ 124,086 ​ $ — ​ $ 124,086 ​ $ 8,936 ​ $ 8,670 ​ TTEC Engage ​ 442,655 ​ (7) ​ 442,648 ​ 16,344 ​ 17,355 ​ Total ​ $ 566,741 ​ $ (7) ​ $ 566,734 ​ $ 25,280 ​ $ 26,025 ​ ​ Nine Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Depreciation Income ​ ​ Gross ​ Intersegment ​ Net ​ & ​ from ​ ​ Revenue ​ Sales ​ Revenue ​ Amortization ​ Operations TTEC Digital ​ $ 348,147 ​ $ (35) ​ $ 348,112 ​ $ 24,891 ​ $ 25,296 ​ TTEC Engage ​ 1,437,317 ​ — ​ 1,437,317 ​ 55,170 ​ 94,502 ​ Total ​ $ 1,785,464 ​ $ (35) ​ $ 1,785,429 ​ $ 80,061 ​ $ 119,798 ​ ​ Nine Month Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Depreciation Income ​ ​ Gross ​ Intersegment ​ Net ​ & ​ from ​ ​ Revenue ​ Sales ​ Revenue ​ Amortization ​ Operations TTEC Digital ​ $ 295,712 ​ $ (44) ​ $ 295,668 ​ $ 21,312 ​ $ 22,438 ​ TTEC Engage ​ 1,365,086 ​ ​ (7) ​ 1,365,079 ​ 49,343 ​ 142,841 ​ Total ​ $ 1,660,798 ​ $ (51) ​ $ 1,660,747 ​ $ 70,655 ​ $ 165,279 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ ​ September 30, ​ September 30, ​ ​ ​ 2022 2021 2022 2021 Capital Expenditures ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ TTEC Digital ​ $ 3,408 $ 1,599 $ 6,880 $ 5,029 ​ TTEC Engage ​ 25,366 ​ 15,586 ​ 57,684 ​ 35,749 ​ Total ​ $ 28,774 $ 17,185 $ 64,564 $ 40,778 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2022 December 31, 2021 ​ Total Assets ​ ​ ​ ​ ​ ​ ​ ​ TTEC Digital ​ ​ $ 827,948 $ 828,255 ​ TTEC Engage ​ ​ 1,327,089 ​ 1,168,549 ​ Total ​ ​ $ 2,155,037 $ 1,996,804 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The following table presents the Company revenue based upon the geographic location where the services are provided (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ ​ 2022 2021 2022 2021 ​ Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ United States ​ $ 400,391 ​ $ 377,211 $ 1,212,175 ​ $ 1,108,390 ​ Philippines ​ 91,306 ​ 100,531 ​ 281,759 ​ 305,255 ​ Europe / Middle East / Africa ​ 34,507 ​ 28,891 ​ 100,307 ​ 82,447 ​ Latin America ​ ​ 30,750 ​ 28,737 ​ 85,905 ​ 85,529 ​ Asia Pacific / India ​ 19,075 ​ 16,989 ​ 54,899 ​ 49,560 ​ Canada ​ 16,424 ​ 14,375 ​ 50,384 ​ 29,566 ​ Total ​ $ 592,453 $ 566,734 ​ $ 1,785,429 ​ $ 1,660,747 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

SIGNIFICANT CLIENTS AND OTHER C

SIGNIFICANT CLIENTS AND OTHER CONCENTRATIONS	9 Months Ended
	Sep. 30, 2022
SIGNIFICANT CLIENTS AND OTHER CONCENTRATIONS [Abstract]
SIGNIFICANT CLIENTS AND OTHER CONCENTRATIONS	(4) SIGNIFICANT CLIENTS AND OTHER CONCENTRATIONS The Company had one client that contributed in excess of 10% of total revenue for the nine months ended September 30, 2022; this client operates in the automotive industry and is included in the TTEC Engage segment. This client contributed 10.5% and 9.1% of total revenue for the nine months ended September 30, 2022 and 2021, respectively. The Company had one client that contributed in excess of 10% of total revenue for the nine months ended September 30, 2021; this client operates in the financial services sector. This client contributed 7.4% and 13.3% of total revenue for the nine months ended September 30, 2022 and 2021, respectively. The Company does have clients with aggregate revenue exceeding $100 million annually and the loss of one or more of these clients could have a material adverse effect on the Company’s business, operating results, or financial condition. To mitigate this risk, the Company has multiple contracts with these larger clients, where each individual contract is for an amount below the $100 million aggregate. To limit the Company’s credit risk with its clients, management performs periodic credit evaluations, maintains allowances for credit losses and may require pre-payment for services from certain clients. Based on currently available information, management does not believe significant credit risk existed as of September 30, 2022. Activity in the Company’s Allowance for credit losses consists of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ 2022 2021 2022 2021 Balance, beginning of period ​ $ 5,406 ​ $ 5,940 ​ $ 5,409 ​ $ 5,067 ​ Provision for credit losses ​ 1,363 ​ (189) ​ 1,561 ​ ​ (34) ​ Uncollectible receivables written-off ​ (890) ​ 302 ​ (1,110) ​ ​ 41 ​ Effect of foreign currency ​ ​ (24) ​ ​ (7) ​ ​ (5) ​ ​ (16) ​ Acquisition ​ — ​ — ​ — ​ ​ 988 ​ Balance, end of period ​ $ 5,855 ​ $ 6,046 ​ $ 5,855 ​ $ 6,046 ​ ​ Accounts Receivable Sales Agreement The Company is party to an Uncommitted Receivables Purchase Agreement (“Agreement”) with Bank of the West (“Bank”), whereby from time-to-time the Company may elect to sell, on a revolving basis, U.S. accounts receivables of certain clients at a discount to the Bank for cash on a limited recourse basis. The maximum amount of receivables that the Company may sell to the Bank at any given time shall not exceed $100 million. The sales of accounts receivable in accordance with the Agreement are reflected as a reduction of Accounts Receivable, net on the Consolidated Balance Sheets. The Company has retained no interest in the sold receivables but retains all collection responsibilities on behalf of the Bank. The discount on the accounts receivable sold will be recorded within Other expense, net in the Consolidated Statements of Comprehensive Income (Loss). The cash proceeds from this Agreement are included in the change in accounts receivable within the operating activities section of the Consolidated Statements of Cash Flow. As of September 30, 2022 and December 31, 2021, the Company had factored $85.6 million and $97.7 million, respectively, of accounts receivable; under the Agreement discounts on these receivables were not material during the quarter. As of September 30, 2022, the Company had collected $10.0 million of cash from customers which had not been remitted to the Bank. The unremitted cash is restricted cash and is included within Prepaid and other current assets with the corresponding liability included in Accrued expenses on the Consolidated Balance Sheet. The Company has not recorded any servicing assets or liabilities as of September 30, 2022 as the fair value of the servicing arrangement as well as the fees earned were not material to the financial statements. Effective November 1, 2022, the Company amended the arrangement to modify the list of eligible clients who may be sold pursuant to the Agreement, and to memorialize the transition from LIBOR to SOFR for discount calculation purposes.

GOODWILL

GOODWILL	9 Months Ended
	Sep. 30, 2022
GOODWILL [ABSTRACT]
GOODWILL.	(5) GOODWILL ​ Goodwill consisted of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Effect of ​ ​ ​ ​ December 31, ​ Acquisitions / ​ ​ ​ ​ Foreign ​ September 30, ​ ​ 2021 ​ Adjustments ​ Impairments ​ Currency ​ 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ TTEC Digital ​ $ 505,222 ​ $ — ​ $ — ​ $ (4,355) ​ $ 500,867 ​ TTEC Engage ​ 234,259 ​ 75,896 ​ ​ — ​ ​ (5,430) ​ 304,725 ​ Total ​ $ 739,481 ​ $ 75,896 ​ $ — ​ $ (9,785) ​ $ 805,592 ​ ​ The Company performs a goodwill impairment assessment on at least an annual basis. The Company conducts its annual goodwill impairment assessment during the fourth quarter, or more frequently, if indicators of impairment exist. During the quarter ended September 30, 2022, the Company assessed whether any such indicators of impairment existed and concluded there were none.

DERIVATIVES

DERIVATIVES	9 Months Ended
	Sep. 30, 2022
DERIVATIVES [ABSTRACT]
DERIVATIVES	(6) DERIVATIVES Cash Flow Hedges The Company enters into foreign exchange related derivatives. Foreign exchange derivatives entered into consist of forward and option contracts to reduce the Company’s exposure to foreign currency exchange rate fluctuations that are associated with forecasted revenue earned in foreign locations. Upon proper qualification, these contracts are designated as cash flow hedges. It is the Company’s policy to only enter into derivative contracts with investment grade counterparty financial institutions, and correspondingly, the fair value of derivative assets considers, among other factors, the creditworthiness of these counterparties. Conversely, the fair value of derivative liabilities reflects the Company’s creditworthiness. As of September 30, 2022, the Company has not experienced, nor does it anticipate, any issues related to derivative counterparty defaults. The following table summarizes the aggregate unrealized net gain or loss in Accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2022 and 2021 (in thousands and net of tax): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ ​ September 30, ​ September 30, ​ ​ ​ 2022 2021 2022 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Aggregate unrealized net gain/(loss) at beginning of period ​ $ (5,718) ​ $ 5,877 ​ $ (40) ​ $ 8,431 ​ Add: Net gain/(loss) from change in fair value of cash flow hedges ​ ​ (2,004) ​ ​ (6,850) ​ ​ (7,774) ​ ​ (11,817) ​ Less: Net (gain)/loss reclassified to earnings from effective hedges ​ ​ (1,276) ​ ​ 700 ​ ​ (1,184) ​ ​ 3,113 ​ Aggregate unrealized net gain/(loss) at end of period ​ $ (8,998) ​ $ (273) ​ $ (8,998) ​ $ (273) ​ ​ The Company’s foreign exchange cash flow hedging instruments as of September 30, 2022 and December 31, 2021 are summarized as follows (amounts in thousands). All hedging instruments are forward contracts. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Local ​ ​ ​ ​ ​ ​ ​ ​ Currency ​ U.S. Dollar ​ ​ % Maturing ​ ​ Contracts ​ ​ Notional ​ Notional ​ ​ in the next ​ ​ Maturing As of September 30, 2022 ​ Amount ​ Amount ​ ​ 12 months ​ ​ Through Canadian Dollar 9,000 ​ $ 7,099 ​ ​ 100.0 % ​ December 2022 ​ Philippine Peso 8,455,000 ​ 158,359 (1) ​ 42.5 % ​ June 2025 ​ Mexican Peso 1,182,000 ​ 51,772 ​ ​ 41.0 % ​ March 2025 ​ ​ ​ ​ ​ $ 217,230 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Local ​ ​ ​ ​ ​ ​ ​ ​ ​ Currency ​ U.S. Dollar ​ ​ ​ ​ ​ ​ ​ ​ Notional ​ Notional ​ ​ ​ ​ As of December 31, 2021 ​ Amount ​ Amount ​ ​ ​ ​ ​ ​ Canadian Dollar 9,000 ​ $ 7,022 ​ ​ ​ ​ ​ ​ ​ Philippine Peso 8,472,000 ​ 164,295 (1) ​ ​ ​ ​ ​ ​ Mexican Peso 1,422,500 ​ 63,002 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 234,319 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (1) Includes contracts to purchase Philippine pesos in exchange for New Zealand dollars and Australian dollars, which are translated into equivalent U.S. dollars on September 30, 2022 and December 31, 2021. ​ Fair Value Hedges The Company enters into foreign exchange forward contracts to economically hedge against foreign currency exchange gains and losses on certain receivables and payables of the Company’s foreign operations. Changes in the fair value of derivative instruments designated as fair value hedges are recognized in earnings in Other income (expense), net. As of September 30, 2022 and December 31, 2021 the total notional amounts of the Company’s forward contracts used as fair value hedges were $54.3 million and $32.9 million, respectively. Derivative Valuation and Settlements ​ The Company’s derivatives as of September 30, 2022 and December 31, 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2022 ​ ​ Designated Not Designated ​ ​ as Hedging as Hedging ​ Designation: ​ Instruments Instruments ​ Foreign Foreign Derivative contract type: ​ Exchange ​ Exchange Derivative classification: ​ Cash Flow ​ Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value and location of derivative in the Consolidated Balance Sheet: ​ ​ ​ ​ ​ ​ ​ Prepaids and other current assets ​ $ 2,114 ​ $ 158 ​ Other long-term assets ​ 1,095 ​ — ​ Other current liabilities ​ (10,034) ​ (229) ​ Other long-term liabilities ​ (5,333) ​ — ​ Total fair value of derivatives, net ​ $ (12,158) ​ $ (71) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2021 ​ ​ Designated Not Designated ​ ​ as Hedging as Hedging ​ Designation: ​ Instruments Instruments ​ Foreign Foreign Derivative contract type: ​ Exchange ​ Exchange Derivative classification: ​ Cash Flow ​ Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value and location of derivative in the Consolidated Balance Sheet: ​ ​ ​ ​ ​ ​ ​ Prepaids and other current assets ​ $ 2,272 ​ $ 204 ​ Other long-term assets ​ 611 ​ — ​ Other current liabilities ​ (1,527) ​ (6) ​ Other long-term liabilities ​ (1,418) ​ — ​ Total fair value of derivatives, net ​ $ (62) ​ $ 198 ​ ​ The effects of derivative instruments on the Consolidated Statements of Comprehensive Income (Loss) for the three months ended September 30, 2022 and 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ ​ 2022 ​ 2021 ​ ​ Designated as Hedging Designation: ​ Instruments Derivative contract type: ​ Foreign Exchange Derivative classification: Cash Flow ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount of gain or (loss) recognized in Other comprehensive income (loss) - effective portion, net of tax ​ $ (1,276) ​ $ 700 ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount and location of net gain or (loss) reclassified from Accumulated OCI to income - effective portion: ​ ​ ​ ​ ​ ​ ​ Revenue ​ $ (1,724) ​ $ 947 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ ​ 2022 ​ 2021 Designation: Not Designated as Hedging Instruments ​ Derivative contract type: Foreign Exchange ​ Derivative classification: Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income (Loss): ​ ​ ​ ​ ​ ​ ​ Other income (expense), net $ 15 $ (80) ​ ​ The effects of derivative instruments on the Consolidated Statements of Comprehensive Income (Loss) for the nine months ended September 30, 2022 and 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, ​ ​ ​ 2022 ​ 2021 ​ ​ ​ Designated as Hedging ​ Designation: ​ Instruments ​ Derivative contract type: ​ Foreign Exchange ​ Derivative classification: Cash Flow ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount of gain or (loss) recognized in Other comprehensive income (loss) - effective portion, net of tax ​ $ (1,184) ​ $ 3,113 ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount and location of net gain or (loss) reclassified from Accumulated OCI to income - effective portion: ​ ​ ​ ​ ​ ​ ​ Revenue ​ $ (1,598) ​ $ 4,207 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, ​ ​ ​ 2022 ​ 2021 ​ Designation: Not Designated as Hedging Instruments ​ Derivative contract type: Foreign Exchange ​ Derivative classification: Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income (Loss): ​ ​ ​ ​ ​ ​ ​ Other income (expense), net $ 273 $ (42) ​ ​

FAIR VALUE

FAIR VALUE	9 Months Ended
	Sep. 30, 2022
FAIR VALUE [Abstract]
FAIR VALUE	(7) FAIR VALUE The authoritative guidance for fair value measurements establishes a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. This hierarchy requires that the Company maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows: Level 1 — Quoted prices in active markets for identical assets or liabilities. Level 2 — Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, similar assets and liabilities in markets that are not active or can be corroborated by observable market data. Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs. The following presents information as of September 30, 2022 and December 31, 2021 for the Company’s assets and liabilities required to be measured at fair value on a recurring basis, as well as the fair value hierarchy used to determine their fair value. Accounts Receivable and Payable Investments – Debt Derivatives - The following is a summary of the Company’s fair value measurements for its net derivative assets (liabilities) as of September 30, 2022 and December 31, 2021 (in thousands): As of September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using ​ ​ ​ ​ Quoted Prices in Significant ​ ​ ​ ​ ​ Active Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ ​ ​ ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ At Fair Value Cash flow hedges ​ $ — ​ $ (12,158) ​ $ — ​ $ (12,158) ​ Fair value hedges ​ — ​ (71) ​ — ​ (71) ​ Total net derivative asset (liability) ​ $ — ​ $ (12,229) ​ $ — ​ $ (12,229) ​ ​ As of December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using ​ ​ ​ ​ Quoted Prices in Significant ​ ​ ​ ​ ​ Active Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ ​ ​ ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ At Fair Value Cash flow hedges ​ $ — ​ $ (62) ​ $ — ​ $ (62) ​ Fair value hedges ​ — ​ 198 ​ — ​ 198 ​ Total net derivative asset (liability) ​ $ — ​ $ 136 ​ $ — ​ $ 136 ​ ​ The following is a summary of the Company’s fair value measurements as of September 30, 2022 and December 31, 2021 (in thousands): ​ As of September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using ​ Quoted Prices in ​ ​ Significant ​ ​ Active Markets for ​ Significant Other ​ Unobservable ​ ​ Identical Assets ​ Observable Inputs ​ Inputs ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative instruments, net ​ $ — ​ $ — ​ $ — ​ Deferred compensation plan asset ​ ​ 23,483 ​ ​ — ​ ​ — ​ Contingent consideration ​ ​ — ​ ​ — ​ ​ 5,923 ​ Total assets ​ $ 23,483 ​ $ — ​ $ 5,923 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative instruments, net ​ $ — ​ $ (12,229) ​ $ — ​ Contingent consideration ​ — ​ — ​ (6,439) ​ Total liabilities ​ $ — ​ $ (12,229) ​ $ (6,439) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Redeemable noncontrolling interest ​ $ — ​ $ — ​ $ (55,696) ​ ​ As of December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using ​ Quoted Prices in ​ ​ Significant ​ ​ Active Markets for ​ Significant Other ​ Unobservable ​ ​ Identical Assets ​ Observable Inputs ​ Inputs ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative instruments, net ​ $ — ​ $ 136 ​ $ — ​ Deferred compensation plan asset ​ ​ 28,572 ​ ​ — ​ ​ — ​ Total assets ​ $ 28,572 ​ $ 136 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative instruments, net ​ $ — ​ $ — ​ $ — ​ Contingent consideration ​ — ​ — ​ (9,600) ​ Total liabilities ​ $ — ​ $ — ​ $ (9,600) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Redeemable noncontrolling interest ​ $ — ​ $ — ​ $ (56,316) ​ ​ The table above has been updated from the amounts included as of December 31, 2021 presented in the Annual Report on Form 10-K Deferred Compensation Plan Contingent Consideration During the fourth quarter of 2020, the first quarter of 2021, the second quarter of 2021 and the fourth quarter of 2021, the Company recorded fair value adjustments to the contingent consideration associated with the VF US and VF ASEAN acquisitions based on increased actual results and estimates of EBITDA for 2021 which caused the payables to increase. Accordingly, a combined $4.3 million increase, $0.9 million increase, $0.2 million increase and a $0.1 million increase to the payables were recorded as of December 31, 2020, March 31, 2021, June 30, 2021 and December 31, 2021, respectively, and were included in Other income (expense), net in the Consolidated Statements of Comprehensive Income (Loss). The future contingent consideration for the VF US and VF ASEAN acquisitions were finalized at $9.6 million and were paid during March 2022. During the third quarter of 2022, a fair value adjustment of $2.4 million net benefit was recorded related to fair value adjustments of the estimated contingent payments associated with the Faneuil acquisition based on updated discount factor for one contract and a complete reduction for the second contract as it was not awarded to the Company. The fair value adjustment benefit was included in Other income (expense) in the Consolidated Statements of Comprehensive Income (Loss). Contingent Receivables A rollforward of the activity in the Company’s fair value of the contingent consideration payable is as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Imputed ​ ​ ​ ​ December 31, ​ ​ ​ ​ ​ ​ ​ Interest / ​ September 30, ​ ​ 2021 ​ Acquisitions ​ Payments ​ Adjustments ​ 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ VF US ​ $ (7,414) ​ $ — ​ $ 7,414 ​ $ — ​ $ — ​ VF ASEAN ​ ​ (2,186) ​ ​ — ​ ​ 2,186 ​ ​ — ​ ​ — ​ Faneuil ​ ​ — ​ ​ (8,816) ​ ​ — ​ ​ 2,377 ​ ​ (6,439) ​ Total ​ $ (9,600) ​ $ (8,816) ​ $ 9,600 ​ $ 2,377 ​ $ (6,439) ​ ​ A rollforward of the activity in the Company’s fair value of the contingent consideration receivable is as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Imputed ​ ​ ​ ​ December 31, ​ ​ ​ ​ ​ ​ ​ Interest / ​ September 30, ​ ​ 2021 ​ Acquisitions ​ Payments ​ Adjustments ​ 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Faneuil ​ $ — ​ $ 10,370 ​ $ — ​ $ (4,447) ​ $ 5,923 ​ Total ​ $ — ​ $ 10,370 ​ $ — ​ $ (4,447) ​ $ 5,923 ​ ​

IMPAIRMENT OF ASSETS

IMPAIRMENT OF ASSETS	9 Months Ended
	Sep. 30, 2022
RESTRUCTURING CHARGES AND IMPAIRMENT LOSSES [Abstract]
RESTRUCTURING CHARGES AND IMPAIRMENT LOSSES	(8) IMPAIRMENT OF ASSETS During each of the periods presented, the Company evaluated the recoverability of its leasehold improvement assets at certain customer engagement centers as well as all internally developed software projects. An asset group is considered to be impaired when the anticipated undiscounted future cash flows of its asset group is estimated to be less than the asset group’s carrying value. The amount of impairment recognized is the difference between the carrying value of the asset group and its fair value. To determine fair value, the Company used Level 3 inputs in its discounted cash flows analysis. Assumptions included the amount and timing of estimated future cash flows and assumed discount rates. During the three and nine months ended September 30, 2022, the Company recognized impairment losses, net related to leasehold improvements assets, right of use lease assets, internally developed software and certain computer equipment of $2.9 million and $13.3 million, respectively, across the TTEC Digital and TTEC Engage segments.

INCOME TAXES

INCOME TAXES	9 Months Ended
	Sep. 30, 2022
INCOME TAXES [ABSTRACT]
INCOME TAXES	(9) INCOME TAXES The Company accounts for income taxes in accordance with the accounting literature for income taxes, which requires recognition of deferred tax assets and liabilities for the expected future income tax consequences of transactions that have been included in the Consolidated Financial Statements. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial statement and tax basis of assets and liabilities using tax rates in effect for the year in which the differences are expected to reverse. Quarterly, the Company assesses the likelihood that its net deferred tax assets will be recovered. Based on the weight of all available evidence, both positive and negative, the Company records a valuation allowance against deferred tax assets when it is more-likely-than-not that a future tax benefit will not be realized. The Company’s selection of an accounting policy with respect to both the global intangible low taxed foreign income (“GILTI”) and base erosion and anti-abuse tax (“BEAT”) rules is to compute the related taxes in the period the entity becomes subject to either GILTI or BEAT. As of September 30, 2022, the Company had $19.5 million of net deferred tax assets (after a $25.0 million valuation allowance) and a net deferred tax asset of $15.2 million (after deferred tax liabilities of $4.3 million) related to the United States and international tax jurisdictions whose recoverability is dependent upon future profitability. The effective tax rate for the three and nine months ended September 30, 2022 was 15.2% and 17.7%, respectively. The effective tax rate for the three and nine months ended September 30, 2021 was 30.6% and 21.9%, respectively. The Company’s U.S. income tax returns filed for the tax years ending December 31, 2017 to present, remain open tax years. The Company has been notified of the intent to audit or is currently under audit of income taxes for the United States for tax year 2017 and 2018, the Philippines for tax year 2020, the state of California for tax years 2017 through 2018, the state of Washington for tax years 2017 through 2019, the state of Missouri for tax years 2019 and 2020, and India for tax years 2017 through 2019. Although the outcome of examinations by taxing authorities are always uncertain, it is the opinion of management that the resolution of these audits will not have a material effect on the Company’s Consolidated Financial Statements. When there is a change in judgment concerning the recovery of deferred tax assets in future periods, a valuation allowance is recorded into earnings during the quarter in which the change in judgment occurred. In the first, third and fourth quarters of 2021, changes to the valuation allowance were recorded in the amount of $2.4 million, $6.4 million and $5.1 million, respectively, for assets that did not meet the “more-likely-than-not” standard. In the first, second and third quarters of 2022, $1.3 million, $0.6 million and $2.5 million, respectively, were released from the valuation allowance for assets that are expected to be recognized in the future. The Company has been granted “Tax Holidays” as an incentive to attract foreign investment by the government of the Philippines. Generally, a Tax Holiday is an agreement between the Company and a foreign government under which the Company receives certain tax benefits in that country, such as exemption from taxation on profits derived from export-related activities. In the Philippines, the Company has been granted multiple agreements with an initial period of tax at 0% for four years, which will be fully expired in 2022 and additional periods at a reduced tax rate, expiring at various times beginning in 2030. The aggregate benefit to income tax expense for the three months ended September 30, 2022 and 2021 was approximately $0.3 million and $0.5 million, respectively, which had an impact on diluted net income per share of $0.01 and $0.01, respectively. The aggregate effect on income tax expense for the nine months ended September 30, 2022 and 2021, was approximately $1.3 million and $4.2 million benefit, respectively, which had an impact on diluted net income per share of $0.03 and $0.09, respectively. ​

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Sep. 30, 2022
COMMITMENTS AND CONTINGENCIES [Abstract]
COMMITMENTS AND CONTINGENCIES	(10) COMMITMENTS AND CONTINGENCIES Credit Facility On November 23, 2021, the Company entered into a Sixth Amendment to the Amended and Restated Credit Agreement (the “Credit Agreement”) originally dated June 3, 2013, (collectively, the “Credit Facility”) to convert the $300 million term loan included in the total Credit Facility commitments, that was previously agreed on March 25, 2021 as part of the Fifth Amendment to the Credit Agreement, into a $1.5 billion senior secured revolving Credit Facility with a syndicate of lenders led by Wells Fargo, National Association, as agent, swingline and fronting lender. The Credit Facility matures on November 23, 2026. We primarily use our Credit Facility to fund working capital, general operations, dividends, acquisitions and other strategic activities. On March 25, 2021, the Company entered into a Fifth Amendment to its Credit Agreement and Credit Facility to increase the total commitments by $300 million to $1.2 billion by exercising the accordion feature that was included in the senior secured revolving credit facility. The $300 million increase was in the form of a term loan, could be prepaid anytime and would become due February 14, 2024, contemporaneously with the expiration of the revolving line of credit. The maximum commitment under the Credit Facility is $1.5 billion in the aggregate, if certain conditions are satisfied. The Credit Facility commitment fees are payable to the lenders in an amount equal to the unused portion of the Credit Facility multiplied by a rate per annum as determined by reference to the Company’s net leverage ratio. The Credit Agreement contains customary affirmative, negative, and financial covenants. The Credit Agreement permits accounts receivable factoring up to the greater of $100 million or 25 percent of the average book value of all accounts receivable over the most recent twelve-month period. The Credit Agreement also permits the utilization of up to $100 million of limits within the Credit Facility for letters of credit to be used in the business. Base rate loans bear interest at a rate equal to the greatest of (i) Wells Fargo’s prime rate, (ii) one half of 1% Letter of credit fees are one eighth of 1% of the stated amount of the letter of credit on the date of issuance, renewal or amendment, plus an annual fee equal to the borrowing margin for Eurodollar loans. The Company primarily utilizes its Credit Facility to fund working capital, general operations, dividends and other strategic activities, such as the acquisitions described in Note 2. As of September 30, 2022 and December 31, 2021, the Company had borrowings of $955.0 million and $791.0 million, respectively, under its Credit Facility, and its average daily utilization was $1,023.6 million and $747.9 million for the nine months ended September 30, 2022 and 2021, respectively. During early April 2021, the Company increased borrowings by approximately $500 million in connection with the acquisition of Avtex (see Note 2). Based on the current level of availability based on the covenant calculations, the Company’s remaining borrowing capacity was approximately $370 million as of September 30, 2022. As of September 30, 2022, the Company was in compliance with all covenants and conditions under its Credit Agreement. Letters of Credit As of September 30, 2022, outstanding letters of credit under the Credit Facility totaled $2.6 million and primarily guaranteed workers’ compensation and other insurance related obligations. As of September 30, 2022, letters of credit and contract performance guarantees issued outside of the Credit Agreement totaled $0.3 million. Guarantees Indebtedness under the Credit Agreement is guaranteed by certain of the Company’s present and future domestic subsidiaries. Legal Proceedings From time to time, the Company has been involved in legal actions, both as plaintiff and defendant, which arise in the ordinary course of business. The Company accrues for exposures associated with such legal actions to the extent that losses are deemed both probable and reasonably estimable. To the extent specific reserves have not been made for certain legal proceedings, their ultimate outcome, and consequently, an estimate of possible loss, if any, cannot reasonably be determined at this time. Based on currently available information and advice received from counsel, the Company believes that the disposition or ultimate resolution of any current legal proceedings, except as otherwise specifically reserved for in its financial statements, will not have a material adverse effect on the Company’s financial position, cash flows or results of operations.

DEFERRED REVENUE AND REMAINING

DEFERRED REVENUE AND REMAINING PERFORMANCE OBLIGATIONS	9 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	(11) DEFERRED REVENUE AND REMAINING PERFORMANCE OBLIGATIONS Revenue recognized for the nine months ended September 30, 2022 from amounts included in deferred revenue as of December 31, 2021 was $196.5 million. Revenue recognized for the nine months ended September 30, 2021 from amounts included in deferred revenue as of December 31, 2020 was $126.0 million. Remaining performance obligations (RPO) represent the amount of contracted future revenue that has not yet been recognized, including both deferred revenue and non-cancelable contracted amounts that will be invoiced and recognized as revenue in future periods. The Company’s RPO excludes performance obligations from on-demand arrangements as there are no minimum purchase commitments associated with these arrangements, and certain time and materials contracts that are billed in arrears. As of September 30, 2022, the Company’s RPO was $293.8 million, which will be delivered and recognized within the next three year

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	9 Months Ended
	Sep. 30, 2022
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [ABSTRACT]
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	(12) ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ​ The following table presents changes in the accumulated balance for each component of Other comprehensive income (loss), including current period other comprehensive income (loss) and reclassifications out of accumulated other comprehensive income (loss) (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign ​ ​ ​ ​ ​ ​ ​ ​ Currency ​ Derivative ​ ​ ​ ​ ​ ​ ​ ​ Translation ​ Valuation, Net ​ Other, Net ​ ​ ​ ​ ​ Adjustment ​ of Tax ​ of Tax ​ Totals ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated other comprehensive income (loss) at December 31, 2020 ​ $ (78,139) $ 8,431 $ (2,448) $ (72,156) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other comprehensive income (loss) before reclassifications ​ (17,598) ​ (11,817) ​ 251 ​ (29,164) ​ Amounts reclassified from accumulated other comprehensive income (loss) ​ — ​ 3,113 ​ (216) ​ 2,897 ​ Net current period other comprehensive income (loss) ​ (17,598) ​ (8,704) ​ 35 ​ (26,267) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated other comprehensive income (loss) at September 30, 2021 ​ $ (95,737) $ (273) $ (2,413) $ (98,423) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated other comprehensive income (loss) at December 31, 2021 ​ $ (95,547) $ (40) $ (2,839) $ (98,426) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other comprehensive income (loss) before reclassifications ​ (44,944) ​ ​ (7,774) ​ ​ 627 ​ (52,091) ​ Amounts reclassified from accumulated other comprehensive income (loss) ​ — ​ ​ (1,184) ​ ​ (203) ​ (1,387) ​ Net current period other comprehensive income (loss) ​ (44,944) ​ (8,958) ​ 424 ​ (53,478) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated other comprehensive income (loss) at September 30, 2022 ​ $ (140,491) $ (8,998) $ (2,415) $ (151,904) ​ ​ The following table presents the classification and amount of the reclassifications from Accumulated other comprehensive income (loss) to the Statement of Comprehensive Income (Loss) (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of ​ ​ ​ For the Three Months Ended September 30, ​ Comprehensive Income ​ ​ 2022 2021 (Loss) Classification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative valuation ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss)/gain on foreign currency forward exchange contracts ​ $ (1,724) ​ $ 947 Revenue ​ Tax effect ​ 448 ​ (247) Provision for income taxes ​ ​ ​ $ (1,276) ​ $ 700 Net income (loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other ​ ​ ​ ​ ​ ​ ​ ​ ​ Actuarial loss on defined benefit plan ​ $ (75) ​ $ (80) Cost of services ​ Tax effect ​ 8 ​ 8 Provision for income taxes ​ ​ ​ $ (67) ​ $ (72) Net income (loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of ​ ​ For the Nine Months Ended September 30, ​ Comprehensive Income ​ 2022 2021 (Loss) Classification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative valuation ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain on foreign currency forward exchange contracts ​ $ (1,598) ​ $ 4,207 Revenue ​ Tax effect ​ 414 ​ (1,094) Provision for income taxes ​ ​ ​ $ (1,184) ​ $ 3,113 Net income (loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other ​ ​ ​ ​ ​ ​ ​ ​ ​ Actuarial loss on defined benefit plan ​ $ (226) ​ $ (240) Cost of services ​ Tax effect ​ 23 ​ 24 Provision for income taxes ​ ​ ​ $ (203) ​ $ (216) Net income (loss) ​ ​

WEIGHTED AVERAGE SHARE COUNTS

WEIGHTED AVERAGE SHARE COUNTS	9 Months Ended
	Sep. 30, 2022
Weighted Average Share Counts
NET INCOME PER SHARE	(13) WEIGHTED AVERAGE SHARE COUNTS ​ The following table sets forth the computation of basic and diluted shares for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ 2022 2021 2022 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Shares used in basic earnings per share calculation ​ 47,207 46,984 47,087 46,857 Effect of dilutive securities: ​ ​ ​ ​ ​ ​ ​ ​ Restricted stock units ​ 107 364 258 515 Performance-based restricted stock units ​ — — 9 — Total effects of dilutive securities ​ 107 364 267 515 Shares used in dilutive earnings per share calculation ​ 47,314 47,348 47,354 47,372 ​ For the three months ended September 30, 2022 and 2021, there were Restricted Stock Units (“RSUs”) of 542 thousand and four thousand, respectively, outstanding which were excluded from the computation of diluted net income per share because the effect would have been anti-dilutive. For the nine months ended September 30, 2022 and 2021, there were RSUs of 377 thousand and 78 thousand, respectively, outstanding which were excluded from the computation of diluted net income per share because the effect would have been anti-dilutive.

EMPLOYEE COMPENSATION PLANS

EMPLOYEE COMPENSATION PLANS	9 Months Ended
	Sep. 30, 2022
EMPLOYEE COMPENSATION PLANS [Abstract]
EMPLOYEE COMPENSATION PLANS	(14) EQUITY-BASED COMPENSATION PLANS All equity-based awards to employees are recognized in the Consolidated Statements of Comprehensive Income (Loss) at the fair value of the award on the grant date. During the three and nine months ended September 30, 2022 and 2021, the Company recognized total equity-based compensation expense of $5.4 million and $13.2 million and $4.6 million and $12.0 million, respectively. Of the total compensation expenses, $2.2 million and $5.4 million were recognized in Cost of services and $3.2 million and $7.8 million were recognized in Selling, general and administrative during the three and nine months ended September 30, 2022, respectively. During the three and nine months ended September 30, 2021, the Company recognized compensation expense of $2.0 million and $4.4 million in Cost of services and $2.6 million and $7.6 million in Selling, general and administrative, respectively. Restricted Stock Unit Grants During the nine months ended September 30, 2022 and 2021, the Company granted 365,515 and 219,883 RSUs, respectively, to new and existing employees, which vest over four Performance Based Restricted Stock Unit Grants During 2019, the Company awarded performance restricted stock units (“PRSUs”) that were subject to service and performance vesting conditions. If defined minimum targets were met, the annual value of the PRSUs issued would be between $0.4 million and $1.4 million and vest immediately. If the defined minimum targets were not met, then no shares would be issued. The award amounts were based on the Company’s annual adjusted operating income for the fiscal years 2019, 2020 and 2021. Each fiscal year’s adjusted operating income determined the award amount. The Company recognized compensation expense related to the 2019 PRSUs of $0.3 million and $0.8 million for the three and nine months ended September 30, 2021, respectively. During 2020, the Company awarded PRSUs that are subject to service and performance vesting conditions. If defined minimum targets are met, the annual value of the PRSUs issued will be between $0.2 million and $2.0 million and vest immediately. If the defined minimum targets are not met, then no shares will be issued. The number of shares awarded are based on the Company’s annual revenue and adjusted operating income for the fiscal years 2021 and 2022. Each fiscal year’s revenue and adjusted operating income will determine the award amount. The Company recognized compensation expense related to the 2020 PRSUs of $0.3 million and $0.8 million, respectively, for the three and nine months ended September 30, 2022. The Company recognized compensation expense related to the 2020 PRSUs of $0.2 million and $1.2 million, respectively, for the three and nine months ended September 30, 2021. During 2021, the Company awarded PRSUs that are subject to service and performance vesting conditions. If defined minimum targets are met, the annual value of the PRSUs issued will be between $1.2 million and $4.9 million and vest immediately in 2024. If the defined minimum targets are not met, then no shares will be issued. The number of shares that will be awarded will be based on the Company’s annual revenue and adjusted operating income for the fiscal year 2023. Expense for these awards will begin at the start of the requisite service period, beginning January 1, 2023. During 2022, the Company made awards of two different PRSU programs that are subject to service and performance vesting conditions: ordinary course annual PRSUs and one-time stretch financial goals PRSUs. For the ordinary course annual PRSUs, if defined minimum targets are met, the annual value of the PRSUs issued will be between $0.9 million and $3.5 million and vest immediately in March 2025. If the defined minimum targets are not met, then no shares will be issued. The number of shares that will be awarded will be based on the Company’s annual revenue and adjusted EBITDA for the fiscal year 2024. For the one-time stretch financial goals PRSUs, if defined minimum targets at TTEC Engage and TTEC Digital business segments’ levels are met, the number of shares of PRSUs issued will be between 0.0 million shares and 0.5 million shares and will vest immediately in March 2026. If the defined minimum targets are not met, then no shares will be issued. The number of shares to be awarded will be based on the TTEC Engage and TTEC Digital business segments’ annual revenue and adjusted EBITDA for the fiscal year 2025. Expense for these awards will begin at the start of the requisite service period, beginning January 1, 2024 and January 1, 2025, respectively.

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	9 Months Ended
	Sep. 30, 2022
RELATED PARTY TRANSACTIONS [ABSTRACT]
RELATED PARTY TRANSACTIONS	(15) RELATED PARTY TRANSACTIONS The Company entered into an agreement under which Avion, LLC (“Avion”) and Airmax LLC (“Airmax”) provide certain aviation flight services as requested by the Company. Such services include the use of an aircraft and flight crew. Kenneth D. Tuchman, Chairman and Chief Executive Officer of the Company, has an indirect 100% beneficial ownership interest in Avion and Airmax. During the nine months ended September 30, 2022 and 2021, the Company expensed $0.4 million and $0.5 million, respectively, to Avion and Airmax for services provided to the Company. There was $72 thousand in payments due and outstanding to Avion and Airmax as of September 30, 2022. Ms. Regina M. Paolillo, Global Chief Operating Officer of the Company, was a member of the board of directors of Welltok, Inc., a consumer health SaaS company, and partner of the Company in the TTEC Welltok joint venture. During the nine months ended September 30, 2022 and 2021, the Company recorded revenue of $0.5 million and $1.2 million, respectively, in connection with work performed through the joint venture. As of December 2021, Ms. Paolillo is no longer a member of the board of directors of Welltok, Inc. and the joint venture has been wound down, but TTEC continues to service revenue for Welltok, Inc. Ms. Paolillo is a member of the board of directors of Unisys (NYSE: UIS), a global information technology company. During the nine months ended September 30, 2022 and 2021, the Company recorded revenue of $0.1 million and $0.4 million, respectively, in connection with services performed for Unisys. Ms. Paolillo is a member of the board of directors of Alight (NYSE: ALIT), a provider of digital human capital and business solutions. Starting in November 2022, the Company engaged Alight to provide certain benefit communication and enrollment services. During the nine months ended September 30, 2022, the Company did not have any expenses for these services. Ms. Michelle Swanback, Chief Executive Officer of TTEC Engage, is a member of the board of directors of WTW (NYSE: WTW) (fka “Willis Towers Watson”), that provides compensation consulting and insurance brokerage services to the Company. During the nine months ended September 30, 2022, the Company expensed $0.9 million for these services. ​

OVERVIEW AND SUMMARY OF SIGNIFI

OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
	Sep. 30, 2022
OVERVIEW AND BASIS OF PRESENTATION [Abstract]
Overview	Summary of Business TTEC Holdings, Inc. (“TTEC”, “the Company”; pronounced “T-TEC”) is a leading global customer experience as a service (“CXaaS”) partner for many of the world’s most iconic and disruptive brands. TTEC designs, builds, orchestrates, and delivers seamless digitally enabled customer experiences that are designed to increase brand value, customer loyalty, revenue and profitability through personalized, outcome-based interactions. The Company helps clients improve their customer satisfaction while lowering their total cost to serve by combining innovative digital solutions with service capabilities that deliver a frictionless customer experience (“CX”) across different channels and phases of the customer lifecycle. TTEC’s 62,700 employees serve clients in the automotive, communication, financial services, national/federal and state and local governments, healthcare, logistics, media and entertainment, e-tail/retail, technology, travel and transportation industries via operations in the United States, Australia, Belgium, Brazil, Bulgaria, Canada, Costa Rica, Germany, Greece, India, Ireland, Mexico, the Netherlands, New Zealand, the Philippines, Poland, Singapore, South Africa, Thailand, and the United Kingdom. The Company operates and reports its financial results of operation through two business segments: TTEC Digital and TTEC Engage. ● TTEC Digital is one of the largest pure-play CX technology service providers with expertise in CX strategy, digital consulting, and transformation enabled by proprietary CX applications and technology partnerships. TTEC Digital designs, builds, and operates robust digital experiences for clients and their customers through the contextual integration and orchestration of customer relationship management (“CRM”), data, analytics, CXaaS technology, and intelligent automation to ensure high-quality, scalable CX outcomes. ● TTEC Engage provides the digitally enabled CX managed services to support our clients’ end-to-end customer interaction delivery at scale. The segment delivers omnichannel customer care, tech support, order fulfillment, customer acquisition, growth, and retention services with industry specialization and distinctive CX capabilities for hypergrowth brands. TTEC Engage also delivers digitally enabled back office and industry specific specialty services including artificial intelligence (“AI”) operations, content moderation, and fraud management services. TTEC Digital and TTEC Engage strategically come together under our unified offering, Humanify ® ®
Basis Of Presentation	Basis of Presentation The Consolidated Financial Statements are comprised of the accounts of TTEC, its wholly owned subsidiaries, its 55% equity owned subsidiary Percepta, LLC, its 70% equity owned subsidiary First Call Resolution, LLC and its 70% equity owned subsidiary Serendebyte, Inc. All intercompany balances and transactions have been eliminated in consolidation. The unaudited Consolidated Financial Statements do not include all of the disclosures required by accounting principles generally accepted in the U.S. (“GAAP”), pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The unaudited Consolidated Financial Statements reflect all adjustments which, in the opinion of management, are necessary to state fairly the consolidated financial position of the Company and the consolidated results of operations and comprehensive income (loss) and the consolidated cash flows of the Company. All such adjustments are of a normal, recurring nature. Operating results for the periods presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. These unaudited Consolidated Financial Statements should be read in conjunction with the Company’s audited Consolidated Financial Statements and footnotes thereto included in the Company’s Annual Report on Form 10-K
Use of Estimates	Use of Estimates The preparation of the Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions in determining the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the Consolidated Financial Statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates including those related to derivatives and hedging activities, income taxes including the valuation allowance for deferred tax assets, litigation reserves, restructuring reserves, allowance for credit losses, contingent consideration, redeemable noncontrolling interest, and valuation of goodwill, long-lived and intangible assets. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ materially from these estimates under different assumptions or conditions.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	Cash, Cash Equivalents and Restricted Cash Cash and cash equivalents consist of cash, primarily held in interest-bearing investments, and liquid short-term investments, which have original maturities of less than 90 days. Restricted cash includes cash whereby the Company’s ability to use the funds at any time is contractually limited or is generally designated for specific purposes arising out of certain contractual or other obligations. The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the Condensed Consolidated Balance Sheets that sum to the amounts reported in the Condensed Consolidated Statement of Cash Flows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2022 December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ ​ $ 172,274 $ 158,205 ​ Restricted cash included in "Prepaid and other current assets" ​ ​ 9,972 ​ 22,477 ​ Total ​ ​ $ 182,246 $ 180,682 ​
Concentration of Credit Risk	Concentration of Credit Risk The Company is exposed to credit risk in the normal course of business, primarily related to accounts receivable and derivative instruments. Historically, the losses related to credit risk have been immaterial. The Company regularly monitors its credit risk to mitigate the possibility of current and future exposures resulting in a loss. The Company evaluates the creditworthiness of its clients prior to entering into an agreement to provide services and as necessary through the life of the client relationship. The Company does not believe it is exposed to more than a nominal amount of credit risk in its derivative hedging activities, as the Company diversifies its activities across eight investment-grade financial institutions.
Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805), “Accounting for Contract Assets and Contract Liabilities from Contracts with Customers”, which now requires the acquirer to account for revenue contracts in accordance with Topic 606 as if it had acquired the contract, versus recording these assets and liabilities at fair value on acquisition date. The ASU is effective for interim and annual periods beginning on or after December 15, 2022, with early adoption permitted. The Company adopted the new guidance during the fourth quarter of 2021 which required application to all acquisitions completed during the adoption year. See further discussion in Note 2. Other Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform” (Topic 848), which provides optional expedients and exceptions for contracts, hedging relationships, and other transactions affected by reference rate reform due to the anticipated cessation of the London Interbank Offered Rate (”LIBOR”). The ASU is effective from March 12, 2020, may be applied prospectively and could impact the accounting for LIBOR provisions in the Company’s credit facility agreement. In addition, in January 2021, the FASB issued ASU 2021-01, “Reference Rate Reform – Scope,” which clarified the scope of ASC 848 relating to contract modifications. The Company has not yet adopted the standard but does not expect that the adoption of this guidance will have a material impact on the Company’s financial position, results of operations or cash flows.

OVERVIEW AND BASIS OF PRESENT_2

OVERVIEW AND BASIS OF PRESENTATION (Tables)	9 Months Ended
	Sep. 30, 2022
OVERVIEW AND BASIS OF PRESENTATION [Abstract]
Restrictions on Cash and Cash Equivalents [Table Text Block]	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the Condensed Consolidated Balance Sheets that sum to the amounts reported in the Condensed Consolidated Statement of Cash Flows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2022 December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ ​ $ 172,274 $ 158,205 ​ Restricted cash included in "Prepaid and other current assets" ​ ​ 9,972 ​ 22,477 ​ Total ​ ​ $ 182,246 $ 180,682 ​

ACQUISITIONS AND DIVESTITURES (

ACQUISITIONS AND DIVESTITURES (Tables)	9 Months Ended
	Sep. 30, 2022
Faneuil
Schedule of Assets Acquired and Liabilities Assumed	The following summarizes the estimated fair values of the identifiable assets acquired and liabilities assumed as of the acquisition date (in thousands): ​ ​ ​ ​ ​ ​ Preliminary ​ ​ Estimate of ​ ​ Acquisition Date ​ ​ Fair Value Cash ​ $ — ​ Accounts receivable, net ​ 704 ​ Prepaid and other assets ​ 8,420 ​ Net fixed assets ​ ​ 5,622 ​ Right of use lease assets ​ ​ 16,526 ​ Other assets ​ ​ 3,824 ​ Customer relationships ​ ​ 61,310 ​ Goodwill ​ ​ 75,902 ​ ​ ​ $ 172,308 ​ ​ ​ ​ ​ ​ Accrued employee compensation ​ $ 202 ​ Accrued expenses ​ 2,763 ​ Right of use lease liability - current ​ 3,129 ​ Right of use lease liability - non-current ​ ​ 13,601 ​ Deferred income ​ ​ 811 ​ Other liabilities ​ 9,382 ​ ​ ​ $ 29,888 ​ ​ ​ ​ ​ ​ Total purchase price ​ $ 142,420 ​
Avtex
Schedule of Assets Acquired and Liabilities Assumed	The following summarizes the fair values of the identifiable assets acquired and liabilities assumed as of the acquisition date (in thousands): ​ ​ ​ ​ ​ ​ ​ Acquisition Date ​ ​ Fair Value Cash ​ $ 18,638 ​ Accounts receivable, net ​ 22,214 ​ Prepaid expenses ​ 26,389 ​ Current income tax receivables ​ ​ 93 ​ Net fixed assets ​ ​ 3,162 ​ Right of use lease assets ​ ​ 3,614 ​ Other assets ​ ​ 480 ​ Tradename ​ ​ 5,300 ​ Intellectual property intangible ​ ​ 770 ​ Customer relationships ​ ​ 128,200 ​ Goodwill ​ ​ 378,882 ​ ​ ​ $ 587,742 ​ ​ ​ ​ ​ ​ Accounts payable ​ $ 20,580 ​ Accrued employee compensation ​ 4,325 ​ Accrued expenses ​ ​ 250 ​ Right of use lease liability - current ​ ​ 678 ​ Deferred revenue ​ 56,765 ​ Accrued income taxes ​ ​ 332 ​ Deferred tax liability ​ ​ 1,930 ​ Right of use lease liability - noncurrent ​ 2,936 ​ ​ ​ $ 87,796 ​ ​ ​ ​ ​ ​ Total purchase price ​ $ 499,946 ​

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	9 Months Ended
	Sep. 30, 2022
SEGMENT INFORMATION [ABSTRACT]
Schedule of Segment Selected Financial Data	The following tables present certain financial data by segment (in thousands): Three Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Depreciation Income ​ ​ Gross ​ Intersegment ​ Net ​ & ​ from ​ ​ Revenue ​ Sales ​ Revenue ​ Amortization ​ Operations TTEC Digital ​ $ 117,973 ​ $ (35) ​ $ 117,938 ​ $ 7,645 ​ $ 8,070 ​ TTEC Engage ​ 474,515 ​ — ​ 474,515 ​ 19,472 ​ 27,534 ​ Total ​ $ 592,488 ​ $ (35) ​ $ 592,453 ​ $ 27,117 ​ $ 35,604 ​ ​ Three Months Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Depreciation Income ​ ​ Gross ​ Intersegment ​ Net ​ & ​ from ​ ​ Revenue ​ Sales ​ Revenue ​ Amortization ​ Operations TTEC Digital ​ $ 124,086 ​ $ — ​ $ 124,086 ​ $ 8,936 ​ $ 8,670 ​ TTEC Engage ​ 442,655 ​ (7) ​ 442,648 ​ 16,344 ​ 17,355 ​ Total ​ $ 566,741 ​ $ (7) ​ $ 566,734 ​ $ 25,280 ​ $ 26,025 ​ ​ Nine Months Ended September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Depreciation Income ​ ​ Gross ​ Intersegment ​ Net ​ & ​ from ​ ​ Revenue ​ Sales ​ Revenue ​ Amortization ​ Operations TTEC Digital ​ $ 348,147 ​ $ (35) ​ $ 348,112 ​ $ 24,891 ​ $ 25,296 ​ TTEC Engage ​ 1,437,317 ​ — ​ 1,437,317 ​ 55,170 ​ 94,502 ​ Total ​ $ 1,785,464 ​ $ (35) ​ $ 1,785,429 ​ $ 80,061 ​ $ 119,798 ​ ​ Nine Month Ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Depreciation Income ​ ​ Gross ​ Intersegment ​ Net ​ & ​ from ​ ​ Revenue ​ Sales ​ Revenue ​ Amortization ​ Operations TTEC Digital ​ $ 295,712 ​ $ (44) ​ $ 295,668 ​ $ 21,312 ​ $ 22,438 ​ TTEC Engage ​ 1,365,086 ​ ​ (7) ​ 1,365,079 ​ 49,343 ​ 142,841 ​ Total ​ $ 1,660,798 ​ $ (51) ​ $ 1,660,747 ​ $ 70,655 ​ $ 165,279 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ ​ September 30, ​ September 30, ​ ​ ​ 2022 2021 2022 2021 Capital Expenditures ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ TTEC Digital ​ $ 3,408 $ 1,599 $ 6,880 $ 5,029 ​ TTEC Engage ​ 25,366 ​ 15,586 ​ 57,684 ​ 35,749 ​ Total ​ $ 28,774 $ 17,185 $ 64,564 $ 40,778 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2022 December 31, 2021 ​ Total Assets ​ ​ ​ ​ ​ ​ ​ ​ TTEC Digital ​ ​ $ 827,948 $ 828,255 ​ TTEC Engage ​ ​ 1,327,089 ​ 1,168,549 ​ Total ​ ​ $ 2,155,037 $ 1,996,804 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Schedule of Revenue by Geographic Area	The following table presents the Company revenue based upon the geographic location where the services are provided (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ ​ 2022 2021 2022 2021 ​ Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ United States ​ $ 400,391 ​ $ 377,211 $ 1,212,175 ​ $ 1,108,390 ​ Philippines ​ 91,306 ​ 100,531 ​ 281,759 ​ 305,255 ​ Europe / Middle East / Africa ​ 34,507 ​ 28,891 ​ 100,307 ​ 82,447 ​ Latin America ​ ​ 30,750 ​ 28,737 ​ 85,905 ​ 85,529 ​ Asia Pacific / India ​ 19,075 ​ 16,989 ​ 54,899 ​ 49,560 ​ Canada ​ 16,424 ​ 14,375 ​ 50,384 ​ 29,566 ​ Total ​ $ 592,453 $ 566,734 ​ $ 1,785,429 ​ $ 1,660,747 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

ACCOUNTS RECEIVABLE AND SIGNIFI

ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS (Tables)	9 Months Ended
	Sep. 30, 2022
ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS [Abstract]
Schedule of Change in Allowance for Doubtful Accounts	Activity in the Company’s Allowance for credit losses consists of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ 2022 2021 2022 2021 Balance, beginning of period ​ $ 5,406 ​ $ 5,940 ​ $ 5,409 ​ $ 5,067 ​ Provision for credit losses ​ 1,363 ​ (189) ​ 1,561 ​ ​ (34) ​ Uncollectible receivables written-off ​ (890) ​ 302 ​ (1,110) ​ ​ 41 ​ Effect of foreign currency ​ ​ (24) ​ ​ (7) ​ ​ (5) ​ ​ (16) ​ Acquisition ​ — ​ — ​ — ​ ​ 988 ​ Balance, end of period ​ $ 5,855 ​ $ 6,046 ​ $ 5,855 ​ $ 6,046 ​

GOODWILL (Tables)

GOODWILL (Tables)	9 Months Ended
	Sep. 30, 2022
GOODWILL [ABSTRACT]
Schedule of Goodwill Rollforward	Goodwill consisted of the following (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Effect of ​ ​ ​ ​ December 31, ​ Acquisitions / ​ ​ ​ ​ Foreign ​ September 30, ​ ​ 2021 ​ Adjustments ​ Impairments ​ Currency ​ 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ TTEC Digital ​ $ 505,222 ​ $ — ​ $ — ​ $ (4,355) ​ $ 500,867 ​ TTEC Engage ​ 234,259 ​ 75,896 ​ ​ — ​ ​ (5,430) ​ 304,725 ​ Total ​ $ 739,481 ​ $ 75,896 ​ $ — ​ $ (9,785) ​ $ 805,592 ​

DERIVATIVES (Tables)

DERIVATIVES (Tables)	9 Months Ended
	Sep. 30, 2022
DERIVATIVES [ABSTRACT]
Schedule of Cash Flow Hedges OCI Rollforward	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ ​ September 30, ​ September 30, ​ ​ ​ 2022 2021 2022 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Aggregate unrealized net gain/(loss) at beginning of period ​ $ (5,718) ​ $ 5,877 ​ $ (40) ​ $ 8,431 ​ Add: Net gain/(loss) from change in fair value of cash flow hedges ​ ​ (2,004) ​ ​ (6,850) ​ ​ (7,774) ​ ​ (11,817) ​ Less: Net (gain)/loss reclassified to earnings from effective hedges ​ ​ (1,276) ​ ​ 700 ​ ​ (1,184) ​ ​ 3,113 ​ Aggregate unrealized net gain/(loss) at end of period ​ $ (8,998) ​ $ (273) ​ $ (8,998) ​ $ (273) ​
Schedule of Notional Amounts of Outstanding Cash Flow Hedges	The Company’s foreign exchange cash flow hedging instruments as of September 30, 2022 and December 31, 2021 are summarized as follows (amounts in thousands). All hedging instruments are forward contracts. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Local ​ ​ ​ ​ ​ ​ ​ ​ Currency ​ U.S. Dollar ​ ​ % Maturing ​ ​ Contracts ​ ​ Notional ​ Notional ​ ​ in the next ​ ​ Maturing As of September 30, 2022 ​ Amount ​ Amount ​ ​ 12 months ​ ​ Through Canadian Dollar 9,000 ​ $ 7,099 ​ ​ 100.0 % ​ December 2022 ​ Philippine Peso 8,455,000 ​ 158,359 (1) ​ 42.5 % ​ June 2025 ​ Mexican Peso 1,182,000 ​ 51,772 ​ ​ 41.0 % ​ March 2025 ​ ​ ​ ​ ​ $ 217,230 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Local ​ ​ ​ ​ ​ ​ ​ ​ ​ Currency ​ U.S. Dollar ​ ​ ​ ​ ​ ​ ​ ​ Notional ​ Notional ​ ​ ​ ​ As of December 31, 2021 ​ Amount ​ Amount ​ ​ ​ ​ ​ ​ Canadian Dollar 9,000 ​ $ 7,022 ​ ​ ​ ​ ​ ​ ​ Philippine Peso 8,472,000 ​ 164,295 (1) ​ ​ ​ ​ ​ ​ Mexican Peso 1,422,500 ​ 63,002 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 234,319 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (1) Includes contracts to purchase Philippine pesos in exchange for New Zealand dollars and Australian dollars, which are translated into equivalent U.S. dollars on September 30, 2022 and December 31, 2021.
Schedule of Derivatives Instruments on Balance Sheet	The Company’s derivatives as of September 30, 2022 and December 31, 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2022 ​ ​ Designated Not Designated ​ ​ as Hedging as Hedging ​ Designation: ​ Instruments Instruments ​ Foreign Foreign Derivative contract type: ​ Exchange ​ Exchange Derivative classification: ​ Cash Flow ​ Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value and location of derivative in the Consolidated Balance Sheet: ​ ​ ​ ​ ​ ​ ​ Prepaids and other current assets ​ $ 2,114 ​ $ 158 ​ Other long-term assets ​ 1,095 ​ — ​ Other current liabilities ​ (10,034) ​ (229) ​ Other long-term liabilities ​ (5,333) ​ — ​ Total fair value of derivatives, net ​ $ (12,158) ​ $ (71) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2021 ​ ​ Designated Not Designated ​ ​ as Hedging as Hedging ​ Designation: ​ Instruments Instruments ​ Foreign Foreign Derivative contract type: ​ Exchange ​ Exchange Derivative classification: ​ Cash Flow ​ Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value and location of derivative in the Consolidated Balance Sheet: ​ ​ ​ ​ ​ ​ ​ Prepaids and other current assets ​ $ 2,272 ​ $ 204 ​ Other long-term assets ​ 611 ​ — ​ Other current liabilities ​ (1,527) ​ (6) ​ Other long-term liabilities ​ (1,418) ​ — ​ Total fair value of derivatives, net ​ $ (62) ​ $ 198 ​
Schedule of cash flow hedge impact on Statement of Comprehensive Income	The effects of derivative instruments on the Consolidated Statements of Comprehensive Income (Loss) for the three months ended September 30, 2022 and 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ ​ 2022 ​ 2021 ​ ​ Designated as Hedging Designation: ​ Instruments Derivative contract type: ​ Foreign Exchange Derivative classification: Cash Flow ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount of gain or (loss) recognized in Other comprehensive income (loss) - effective portion, net of tax ​ $ (1,276) ​ $ 700 ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount and location of net gain or (loss) reclassified from Accumulated OCI to income - effective portion: ​ ​ ​ ​ ​ ​ ​ Revenue ​ $ (1,724) ​ $ 947 ​ The effects of derivative instruments on the Consolidated Statements of Comprehensive Income (Loss) for the nine months ended September 30, 2022 and 2021 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, ​ ​ ​ 2022 ​ 2021 ​ ​ ​ Designated as Hedging ​ Designation: ​ Instruments ​ Derivative contract type: ​ Foreign Exchange ​ Derivative classification: Cash Flow ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount of gain or (loss) recognized in Other comprehensive income (loss) - effective portion, net of tax ​ $ (1,184) ​ $ 3,113 ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount and location of net gain or (loss) reclassified from Accumulated OCI to income - effective portion: ​ ​ ​ ​ ​ ​ ​ Revenue ​ $ (1,598) ​ $ 4,207 ​
Schedule of fair value derivative impact on Statement of Comprehensive Income	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ ​ 2022 ​ 2021 Designation: Not Designated as Hedging Instruments ​ Derivative contract type: Foreign Exchange ​ Derivative classification: Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income (Loss): ​ ​ ​ ​ ​ ​ ​ Other income (expense), net $ 15 $ (80) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, ​ ​ ​ 2022 ​ 2021 ​ Designation: Not Designated as Hedging Instruments ​ Derivative contract type: Foreign Exchange ​ Derivative classification: Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income (Loss): ​ ​ ​ ​ ​ ​ ​ Other income (expense), net $ 273 $ (42) ​

FAIR VALUE (Tables)

FAIR VALUE (Tables)	9 Months Ended
	Sep. 30, 2022
Schedule of Fair Value Derivative Assets and Liabilities	The following is a summary of the Company’s fair value measurements for its net derivative assets (liabilities) as of September 30, 2022 and December 31, 2021 (in thousands): As of September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using ​ ​ ​ ​ Quoted Prices in Significant ​ ​ ​ ​ ​ Active Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ ​ ​ ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ At Fair Value Cash flow hedges ​ $ — ​ $ (12,158) ​ $ — ​ $ (12,158) ​ Fair value hedges ​ — ​ (71) ​ — ​ (71) ​ Total net derivative asset (liability) ​ $ — ​ $ (12,229) ​ $ — ​ $ (12,229) ​ ​ As of December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using ​ ​ ​ ​ Quoted Prices in Significant ​ ​ ​ ​ ​ Active Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ ​ ​ ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ At Fair Value Cash flow hedges ​ $ — ​ $ (62) ​ $ — ​ $ (62) ​ Fair value hedges ​ — ​ 198 ​ — ​ 198 ​ Total net derivative asset (liability) ​ $ — ​ $ 136 ​ $ — ​ $ 136 ​
Schedule of Fair Value Assets and Liabilities	The following is a summary of the Company’s fair value measurements as of September 30, 2022 and December 31, 2021 (in thousands): ​ As of September 30, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using ​ Quoted Prices in ​ ​ Significant ​ ​ Active Markets for ​ Significant Other ​ Unobservable ​ ​ Identical Assets ​ Observable Inputs ​ Inputs ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative instruments, net ​ $ — ​ $ — ​ $ — ​ Deferred compensation plan asset ​ ​ 23,483 ​ ​ — ​ ​ — ​ Contingent consideration ​ ​ — ​ ​ — ​ ​ 5,923 ​ Total assets ​ $ 23,483 ​ $ — ​ $ 5,923 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative instruments, net ​ $ — ​ $ (12,229) ​ $ — ​ Contingent consideration ​ — ​ — ​ (6,439) ​ Total liabilities ​ $ — ​ $ (12,229) ​ $ (6,439) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Redeemable noncontrolling interest ​ $ — ​ $ — ​ $ (55,696) ​ ​ As of December 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using ​ Quoted Prices in ​ ​ Significant ​ ​ Active Markets for ​ Significant Other ​ Unobservable ​ ​ Identical Assets ​ Observable Inputs ​ Inputs ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative instruments, net ​ $ — ​ $ 136 ​ $ — ​ Deferred compensation plan asset ​ ​ 28,572 ​ ​ — ​ ​ — ​ Total assets ​ $ 28,572 ​ $ 136 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative instruments, net ​ $ — ​ $ — ​ $ — ​ Contingent consideration ​ — ​ — ​ (9,600) ​ Total liabilities ​ $ — ​ $ — ​ $ (9,600) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Redeemable noncontrolling interest ​ $ — ​ $ — ​ $ (56,316) ​
Schedule of Business Acquisitions by Acquisition Contingent Consideration	A rollforward of the activity in the Company’s fair value of the contingent consideration payable is as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Imputed ​ ​ ​ ​ December 31, ​ ​ ​ ​ ​ ​ ​ Interest / ​ September 30, ​ ​ 2021 ​ Acquisitions ​ Payments ​ Adjustments ​ 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ VF US ​ $ (7,414) ​ $ — ​ $ 7,414 ​ $ — ​ $ — ​ VF ASEAN ​ ​ (2,186) ​ ​ — ​ ​ 2,186 ​ ​ — ​ ​ — ​ Faneuil ​ ​ — ​ ​ (8,816) ​ ​ — ​ ​ 2,377 ​ ​ (6,439) ​ Total ​ $ (9,600) ​ $ (8,816) ​ $ 9,600 ​ $ 2,377 ​ $ (6,439) ​
Faneuil receivable [Member]
Schedule of Business Acquisitions by Acquisition Contingent Consideration	A rollforward of the activity in the Company’s fair value of the contingent consideration receivable is as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Imputed ​ ​ ​ ​ December 31, ​ ​ ​ ​ ​ ​ ​ Interest / ​ September 30, ​ ​ 2021 ​ Acquisitions ​ Payments ​ Adjustments ​ 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Faneuil ​ $ — ​ $ 10,370 ​ $ — ​ $ (4,447) ​ $ 5,923 ​ Total ​ $ — ​ $ 10,370 ​ $ — ​ $ (4,447) ​ $ 5,923 ​

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	9 Months Ended
	Sep. 30, 2022
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [ABSTRACT]
Schedule of accumulated other comprehensive income (loss)	The following table presents changes in the accumulated balance for each component of Other comprehensive income (loss), including current period other comprehensive income (loss) and reclassifications out of accumulated other comprehensive income (loss) (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign ​ ​ ​ ​ ​ ​ ​ ​ Currency ​ Derivative ​ ​ ​ ​ ​ ​ ​ ​ Translation ​ Valuation, Net ​ Other, Net ​ ​ ​ ​ ​ Adjustment ​ of Tax ​ of Tax ​ Totals ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated other comprehensive income (loss) at December 31, 2020 ​ $ (78,139) $ 8,431 $ (2,448) $ (72,156) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other comprehensive income (loss) before reclassifications ​ (17,598) ​ (11,817) ​ 251 ​ (29,164) ​ Amounts reclassified from accumulated other comprehensive income (loss) ​ — ​ 3,113 ​ (216) ​ 2,897 ​ Net current period other comprehensive income (loss) ​ (17,598) ​ (8,704) ​ 35 ​ (26,267) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated other comprehensive income (loss) at September 30, 2021 ​ $ (95,737) $ (273) $ (2,413) $ (98,423) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated other comprehensive income (loss) at December 31, 2021 ​ $ (95,547) $ (40) $ (2,839) $ (98,426) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other comprehensive income (loss) before reclassifications ​ (44,944) ​ ​ (7,774) ​ ​ 627 ​ (52,091) ​ Amounts reclassified from accumulated other comprehensive income (loss) ​ — ​ ​ (1,184) ​ ​ (203) ​ (1,387) ​ Net current period other comprehensive income (loss) ​ (44,944) ​ (8,958) ​ 424 ​ (53,478) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated other comprehensive income (loss) at September 30, 2022 ​ $ (140,491) $ (8,998) $ (2,415) $ (151,904) ​
Schedule of reclassifications from Accumulated other comprehensive income (loss)	The following table presents the classification and amount of the reclassifications from Accumulated other comprehensive income (loss) to the Statement of Comprehensive Income (Loss) (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of ​ ​ ​ For the Three Months Ended September 30, ​ Comprehensive Income ​ ​ 2022 2021 (Loss) Classification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative valuation ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss)/gain on foreign currency forward exchange contracts ​ $ (1,724) ​ $ 947 Revenue ​ Tax effect ​ 448 ​ (247) Provision for income taxes ​ ​ ​ $ (1,276) ​ $ 700 Net income (loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other ​ ​ ​ ​ ​ ​ ​ ​ ​ Actuarial loss on defined benefit plan ​ $ (75) ​ $ (80) Cost of services ​ Tax effect ​ 8 ​ 8 Provision for income taxes ​ ​ ​ $ (67) ​ $ (72) Net income (loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of ​ ​ For the Nine Months Ended September 30, ​ Comprehensive Income ​ 2022 2021 (Loss) Classification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative valuation ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain on foreign currency forward exchange contracts ​ $ (1,598) ​ $ 4,207 Revenue ​ Tax effect ​ 414 ​ (1,094) Provision for income taxes ​ ​ ​ $ (1,184) ​ $ 3,113 Net income (loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other ​ ​ ​ ​ ​ ​ ​ ​ ​ Actuarial loss on defined benefit plan ​ $ (226) ​ $ (240) Cost of services ​ Tax effect ​ 23 ​ 24 Provision for income taxes ​ ​ ​ $ (203) ​ $ (216) Net income (loss) ​

WEIGHTED AVERAGE SHARE COUNTS (

WEIGHTED AVERAGE SHARE COUNTS (Tables)	9 Months Ended
	Sep. 30, 2022
Weighted Average Share Counts
Schedule of Diluted Shares Calculation	The following table sets forth the computation of basic and diluted shares for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ 2022 2021 2022 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Shares used in basic earnings per share calculation ​ 47,207 46,984 47,087 46,857 Effect of dilutive securities: ​ ​ ​ ​ ​ ​ ​ ​ Restricted stock units ​ 107 364 258 515 Performance-based restricted stock units ​ — — 9 — Total effects of dilutive securities ​ 107 364 267 515 Shares used in dilutive earnings per share calculation ​ 47,314 47,348 47,354 47,372

OVERVIEW AND BASIS OF PRESENT_3

OVERVIEW AND BASIS OF PRESENTATION (TABLES) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 172,274	$ 158,205
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	182,246	180,682	$ 167,884	$ 159,015
Prepaid Expenses and Other Current Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 9,972	$ 22,477

OVERVIEW AND BASIS OF PRESENT_4

OVERVIEW AND BASIS OF PRESENTATION (NARRATIVE) (Details)	Sep. 30, 2022 USD ($)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of employees	62,700
Percepta LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
ownership percentage	55%
FCR
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
ownership percentage	70%
Serendebyte
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
ownership percentage	70%

ACQUISITIONS ASSETS ACQUIRED (T

ACQUISITIONS ASSETS ACQUIRED (TABLES) (Details) - USD ($) $ in Thousands	Apr. 01, 2022	Apr. 08, 2021	Sep. 30, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Operating lease assets			$ 93,658	$ 90,180
Deferred tax assets.			19,500
Goodwill			805,592	739,481
Operating lease liability - short-term			38,918	44,460
Accrued employee compensation and benefits			141,220	156,324
Operating lease liability - long-term			$ 69,269	$ 64,419
Faneuil
Business Acquisition [Line Items]
Cash	$ 0
Accounts receivable.	704
Prepaid Expenses	8,420
Other assets	3,824
Operating lease assets	16,526
Fixed Assets Acquired	5,622
Goodwill	75,902
Total assets acquired	172,308
Operating lease liability - short-term	3,129
Accrued employee compensation and benefits	202
Accrued expenses	2,763
Operating lease liability - long-term	13,601
Deferred revenue.	811
Other	9,382
Total liabilities assumed	29,888
Total purchase price	142,420
Faneuil | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets	$ 61,310
Avtex
Business Acquisition [Line Items]
Cash		$ 18,638
Accounts receivable.		22,214
Prepaid Expenses		26,389
Other assets		480
Operating lease assets		3,614
Income Taxes Receivable		93
Fixed Assets Acquired		3,162
Goodwill		378,882
Total assets acquired		587,742
Accounts payable		20,580
Operating lease liability - short-term		678
Accrued employee compensation and benefits		4,325
Accrued income taxes		332
Accrued expenses		250
Operating lease liability - long-term		2,936
Deferred tax liabilities		1,930
Deferred revenue.		56,765
Total liabilities assumed		87,796
Total purchase price		499,946
Avtex | Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets		5,300
Avtex | Intellectual Property [Member]
Business Acquisition [Line Items]
Intangible assets		770
Avtex | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets		$ 128,200

ACQUISITIONS AND DIVESTITURES_2

ACQUISITIONS AND DIVESTITURES (NARRATIVE) (Details)			3 Months Ended			9 Months Ended
	Apr. 01, 2022 USD ($)	Apr. 08, 2021 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Entity Number of Employees			62,700			62,700
Other liabilities, noncurrent			$ 72,996,000	$ 79,827,000		$ 72,996,000
Redeemable noncontrolling interest			55,696,000	56,316,000	$ 55,194,000	55,696,000	$ 55,194,000	$ 55,752,000	$ 54,800,000	$ 52,976,000
Contingent Consideration, at fair value			6,439,000	9,600,000		6,439,000
Business Combination Contingent Consideration Liability			6,439,000	9,600,000		6,439,000
Contingent Consideration Receivable Imputed Interest Benefit and Other Adjustments						(4,447,000)
Business Combination, Contingent Consideration, Asset			5,923,000	0		5,923,000
Increase (decrease) in contingent consideration payable			2,400,000
Revenue of Acquirees since Acquisition Date, Actual			96,000,000			243,600,000
Income (loss) from operations of Acquirees since Acquisition Date, Actual			6,000,000			16,200,000
Sales Revenue Services Net			592,453,000		566,734,000	1,785,429,000	1,660,747,000
Net income attributable to TTEC stockholders			22,249,000		14,435,000	80,887,000	112,222,000
Business Acquisition, Pro Forma Revenue			592,500,000			1,827,400,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax			22,200,000			85,400,000
Other Current Assets [Member]
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Asset			500,000			500,000
TTEC Digital
Business Acquisition [Line Items]
Sales Revenue Services Net			117,938,000		124,086,000	348,112,000	295,668,000
TTEC Engage
Business Acquisition [Line Items]
Sales Revenue Services Net			474,515,000		442,648,000	1,437,317,000	$ 1,365,079,000
Faneuil
Business Acquisition [Line Items]
Payments to Acquire Businesses	$ 142,400,000
Avtex
Business Acquisition [Line Items]
Date of Acquisition		Apr. 08, 2021
Payments to Acquire Businesses		$ 499,946,000
Base purchase price to acquire businesses		490,000,000
Total purchase price		$ 499,946,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities					$ 100,000
Avtex | TTEC Digital
Business Acquisition [Line Items]
Description of Acquired Entity		100% of the outstanding stock of Avtex Solutions Holdings, LLC (“Avtex”). Avtex is an end-to-end customer experience and CXaaS solutions provider with offerings in Genesys and Microsoft cloud solutions
Avtex | Accounting Standards Update 2021-08 [Member]
Business Acquisition [Line Items]
Increase (Decrease) in Deferred Revenue				4,900,000
Sales Revenue Services Net				3,400,000
Avtex | Customer Relationships [Member]
Business Acquisition [Line Items]
Useful life		9 years
Avtex | Trade Names [Member]
Business Acquisition [Line Items]
Useful life		1 year
Avtex | Intellectual Property [Member]
Business Acquisition [Line Items]
Useful life		3 years
Avtex | Avtex
Business Acquisition [Line Items]
ownership percentage		100%
Faneuil
Business Acquisition [Line Items]
Date of Acquisition	Apr. 01, 2022
Total purchase price	$ 142,420,000
Contingent Consideration, at fair value	$ 8,800,000		6,439,000			6,439,000
Number Of Contingent Payments	2
Business Combination Contingent Consideration Liability	$ 8,800,000		6,439,000			$ 6,439,000
Increase (decrease) in contingent consideration payable			$ 2,400,000
Faneuil | Risk Free Interest Rate
Business Acquisition [Line Items]
Business combination contingent consideration measurement input	1.7
Faneuil | Expected forecast volatility rate [Member]
Business Acquisition [Line Items]
Business combination contingent consideration measurement input	20
Faneuil | Discount Rate
Business Acquisition [Line Items]
Business combination contingent consideration measurement input			19.3			19.3
Faneuil | Measurement Input, EBITDA Multiple [Member]
Business Acquisition [Line Items]
Business combination contingent consideration measurement input	19.3
Faneuil | Measurement Input, Revenue Multiple [Member]
Business Acquisition [Line Items]
Business combination contingent consideration measurement input	7.6
Faneuil | Other Current Assets [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value	$ 10,400,000
Faneuil | Other Noncurrent Assets [Member]
Business Acquisition [Line Items]
Fair Value of Assets Acquired	$ 300,000
Faneuil | Other Noncurrent Liabilities [Member]
Business Acquisition [Line Items]
Contingent Consideration, at fair value			$ 6,400,000			$ 6,400,000
Business Combination Contingent Consideration Liability			6,400,000			6,400,000
Faneuil | TTEC Engage
Business Acquisition [Line Items]
Description of Acquired Entity	On April 1, 2022, the Company completed an asset acquisition through its subsidiary TTEC Government Solutions LLC, of certain public sector citizen experience contracts in the transportation infrastructure and healthcare exchange industries from Faneuil, Inc., a subsidiary of ALJ Regional Holdings, Inc. (“the Faneuil Transaction”). The business is operated as part of the TTEC Engage segment and was fully consolidated into the financial statements of TTEC. The Faneuil Transaction was recorded as a business combination under ASC 805, Business Combinations, with identifiable assets acquired and liabilities assumed recorded at their estimated fair values as of the acquisition date.
Faneuil | Customer Relationships [Member]
Business Acquisition [Line Items]
Useful life	10 years
Faneuil receivable [Member]
Business Acquisition [Line Items]
Contingent Consideration Receivable Imputed Interest Benefit and Other Adjustments			(4,400,000)			(4,447,000)
Business Combination, Contingent Consideration, Asset			$ 5,923,000	$ 0		$ 5,923,000

SEGMENT INFORMATION (SEGMENT FI

SEGMENT INFORMATION (SEGMENT FINANCIALS) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net Revenue	$ 592,453	$ 566,734	$ 1,785,429	$ 1,660,747
Depreciation and amortization	27,117	25,280	80,061	70,655
Income (Loss) from Operations	35,604	26,025	119,798	165,279
Capital Expenditures	28,774	17,185	64,564	40,778
Total Assets	2,155,037		2,155,037		$ 1,996,804
Operating Segments
Segment Reporting Information [Line Items]
Net Revenue	592,488	566,741	1,785,464	1,660,798
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Revenue	(35)	(7)	(35)	(51)
TTEC Digital
Segment Reporting Information [Line Items]
Net Revenue	117,938	124,086	348,112	295,668
Depreciation and amortization	7,645	8,936	24,891	21,312
Income (Loss) from Operations	8,070	8,670	25,296	22,438
Capital Expenditures	3,408	1,599	6,880	5,029
Total Assets	827,948		827,948		828,255
TTEC Digital | Operating Segments
Segment Reporting Information [Line Items]
Net Revenue	117,973	124,086	348,147	295,712
TTEC Digital | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Revenue	(35)		(35)	(44)
TTEC Engage
Segment Reporting Information [Line Items]
Net Revenue	474,515	442,648	1,437,317	1,365,079
Depreciation and amortization	19,472	16,344	55,170	49,343
Income (Loss) from Operations	27,534	17,355	94,502	142,841
Capital Expenditures	25,366	15,586	57,684	35,749
Total Assets	1,327,089		1,327,089		$ 1,168,549
TTEC Engage | Operating Segments
Segment Reporting Information [Line Items]
Net Revenue	$ 474,515	442,655	$ 1,437,317	1,365,086
TTEC Engage | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Revenue		$ (7)		$ (7)

SEGMENT INFORMATION (REVENUE GE

SEGMENT INFORMATION (REVENUE GEOGRAPHY) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	$ 592,453	$ 566,734	$ 1,785,429	$ 1,660,747
Other long-term assets	70,942		70,942		$ 77,273
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	400,391	377,211	1,212,175	1,108,390
Philippines [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	91,306	100,531	281,759	305,255
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	30,750	28,737	85,905	85,529
Europe Middle East Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	34,507	28,891	100,307	82,447
Asia Pacific[ Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	19,075	16,989	54,899	49,560
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales Revenue Services Net	$ 16,424	$ 14,375	$ 50,384	$ 29,566

ACCOUNTS RECEIVABLE (SCHEDULE O

ACCOUNTS RECEIVABLE (SCHEDULE OF CHANGE IN ALLOWANCE) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS [Abstract]
Balance, beginning balance	$ 5,406	$ 5,940	$ 5,409	$ 5,067
Provision for credit losses	1,363	(189)	1,561	(34)
Uncollectible receivables written-off	(890)		(1,110)
Uncollectible receivables written-off recoveries		302		41
Effect of foreign currency	(24)	(7)	(5)	(16)
Acquisition credit losses				988
Balance, ending balance	$ 5,855	$ 6,046	$ 5,855	$ 6,046

ACCOUNTS RECEIVABLE AND SIGNI_2

ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS(NARRATIVE) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Entity Wide Revenue Major Customer Line Items
Revenue.	$ 592,453	$ 566,734	$ 1,785,429	$ 1,660,747
Revenue | Customer Concentration Risk | Minimum
Entity Wide Revenue Major Customer Line Items
Revenue.			$ 100,000
Revenue | Customer Concentration Risk | Financial Services Client
Entity Wide Revenue Major Customer Line Items
Concentration Risk, Customer				one
Concentration risk percentage			7.40%	13.30%
Revenue | Customer Concentration Risk | Automotive Industry Client
Entity Wide Revenue Major Customer Line Items
Concentration Risk, Customer			one
Concentration risk percentage			10.50%	9.10%

Receivables Sales Agreement - A

Receivables Sales Agreement - Additional Information (Narrative) (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Receivables Sales Agreement [Line Items]
Factored Accounts Receivable, net	$ 85.6	$ 97.7
Cash from customers not yet remitted	10
Proceeds from factored receivables	100
Maximum
Receivables Sales Agreement [Line Items]
Proceeds from factored receivables	$ 100

GOODWILL (GOODWILL ROLLFORWARD)

GOODWILL (GOODWILL ROLLFORWARD) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)
Goodwill [Line Items]
Beginning balance, goodwill	$ 739,481
Acquisitions / Adjustments Increase (Decrease)	75,896
Effect of Foreign Currency	(9,785)
Ending balance, goodwill	805,592
TTEC Digital
Goodwill [Line Items]
Beginning balance, goodwill	505,222
Effect of Foreign Currency	(4,355)
Ending balance, goodwill	500,867
TTEC Engage
Goodwill [Line Items]
Beginning balance, goodwill	234,259
Acquisitions / Adjustments Increase (Decrease)	75,896
Effect of Foreign Currency	(5,430)
Ending balance, goodwill	$ 304,725

DERIVATIVES (OCI ROLLFORWARD) (

DERIVATIVES (OCI ROLLFORWARD) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
DERIVATIVES [ABSTRACT]
Aggregate unrealized net gain/(loss) at beginning of year	$ (5,718)	$ 5,877	$ (40)	$ 8,431
Add: Net gain/(loss) from change in fair value of cash flow hedges	(2,004)	(6,850)	(7,774)	(11,817)
Less: Net (gain)/loss reclassified to earnings from effective hedges	(1,276)	700	(1,184)	3,113
Aggregate unrealized net gain/(loss) at end of period	$ (8,998)	$ (273)	$ (8,998)	$ (273)

DERIVATIVES (NOTIONAL TABLE) (D

DERIVATIVES (NOTIONAL TABLE) (Details) ₱ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	Sep. 30, 2022 CAD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2022 PHP (₱)	Sep. 30, 2022 MXN ($)	Dec. 31, 2021 CAD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 PHP (₱)	Dec. 31, 2021 MXN ($)
Derivative [Line Items]
Notional Amount		$ 54,300				$ 32,900
CAD
Derivative [Line Items]
Contract Maturity Date	Dec. 31, 2022
PHP
Derivative [Line Items]
Contract Maturity Date	Jun. 30, 2025
MXN
Derivative [Line Items]
Contract Maturity Date	Mar. 31, 2025
Foreign Exchange Forward
Derivative [Line Items]
Notional Amount		217,230				234,319
Foreign Exchange Forward | CAD
Derivative [Line Items]
Notional Amount	$ 9,000	$ 7,099			$ 9,000	7,022
% Maturing in the Next 12 Months	100%	100%	100%	100%
Foreign Exchange Forward | PHP
Derivative [Line Items]
Notional Amount		$ 158,359	₱ 8,455,000			164,295	₱ 8,472,000
% Maturing in the Next 12 Months	42.50%	42.50%	42.50%	42.50%
Foreign Exchange Forward | MXN
Derivative [Line Items]
Notional Amount		$ 51,772		$ 1,182,000		$ 63,002		$ 1,422,500
% Maturing in the Next 12 Months	41%	41%	41%	41%

DERIVATIVES (BALANCE SHEET CLAS

DERIVATIVES (BALANCE SHEET CLASSIFICATION) (Details) - Foreign Exchange [Member] - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Designated as Hedging Instruments [Member] | Cash Flow [Member]
Derivatives, Fair Value [Line Items]
Total net derivative asset (liability)	$ (12,158)	$ (62)
Designated as Hedging Instruments [Member] | Cash Flow [Member] | Prepaids And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Total net derivative asset (liability)	2,114	2,272
Designated as Hedging Instruments [Member] | Cash Flow [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Total net derivative asset (liability)	1,095	611
Designated as Hedging Instruments [Member] | Cash Flow [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total net derivative asset (liability)	(10,034)	(1,527)
Designated as Hedging Instruments [Member] | Cash Flow [Member] | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Total net derivative asset (liability)	(5,333)	(1,418)
Not Designated as Hedging Instruments [Member] | Fair Value [Member]
Derivatives, Fair Value [Line Items]
Total net derivative asset (liability)	(71)	198
Not Designated as Hedging Instruments [Member] | Fair Value [Member] | Prepaids And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Total net derivative asset (liability)	158	204
Not Designated as Hedging Instruments [Member] | Fair Value [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total net derivative asset (liability)	$ (229)	$ (6)

DERIVATIVES (INCOME STATEMENT C

DERIVATIVES (INCOME STATEMENT CLASSIFICATION) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Sales Revenue Services Net	$ 592,453	$ 566,734	$ 1,785,429	$ 1,660,747
Other nonoperating income expense	3,946	3,288	11,317	3,537
Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Cash Flow [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income (loss) - effective portion, net of tax:	(1,276)	700	(1,184)	3,113
Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Cash Flow [Member] | Reclassification from accumulated other comprehensive income | Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Sales Revenue Services Net	(1,724)	947	(1,598)	4,207
Not Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Fair Value [Member] | Other income (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Other nonoperating income expense	$ 15	$ (80)	$ 273	$ (42)

DERIVATIVES (NARRATIVE) (Detail

DERIVATIVES (NARRATIVE) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
DERIVATIVES [ABSTRACT]
Notional Amount	$ 54.3	$ 32.9

FAIR VALUE (DERIVATIVES TABLE)

FAIR VALUE (DERIVATIVES TABLE) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Net Derivative Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash flow hedges	$ 0	$ 0
Fair value hedges	0	0
Total net derivative asset (liability)	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Net Derivative Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash flow hedges	(12,158)	(62)
Fair value hedges	(71)	198
Total net derivative asset (liability)	(12,229)	136
Significant Unobservable Inputs (Level 3) [Member]
Fair Value Net Derivative Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash flow hedges	0	0
Fair value hedges	0	0
Total net derivative asset (liability)	0	0
Fair Value, Measurements, Recurring [Member]
Fair Value Net Derivative Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash flow hedges	(12,158)	(62)
Fair value hedges	(71)	198
Total net derivative asset (liability)	$ (12,229)	$ 136

FAIR VALUE (FAIR VALUE ASSETS A

FAIR VALUE (FAIR VALUE ASSETS AND LIABILITIES) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Assets [Abstract]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]			Other long-term assets, Prepaids and other current assets
Business Combination, Contingent Consideration, Asset	$ 5,923		$ 0
Liabilities [Abstract]
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other current liabilities, Other liabilities, noncurrent		Other current liabilities, Other liabilities, noncurrent
Contingent consideration payable	$ (6,439)		$ (9,600)
Redeemable noncontrolling interest	(55,696)	$ (55,752)	(56,316)	$ (55,194)	$ (54,800)	$ (52,976)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Derivative assets, net	0
Deferred Compensation Plan Assets	23,483		28,572
Business Combination, Contingent Consideration, Asset	0
Total assets	23,483		28,572
Liabilities [Abstract]
Derivative instruments, net	0
Contingent consideration payable	0
Total liabilities	0
Redeemable noncontrolling interest	0
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Derivative assets, net	0		136
Deferred Compensation Plan Assets	0
Business Combination, Contingent Consideration, Asset	0
Total assets	0		136
Liabilities [Abstract]
Derivative instruments, net	(12,229)
Contingent consideration payable	0
Total liabilities	(12,229)
Redeemable noncontrolling interest	0
Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Derivative assets, net	0
Deferred Compensation Plan Assets	0
Business Combination, Contingent Consideration, Asset	5,923
Total assets	5,923
Liabilities [Abstract]
Derivative instruments, net	0
Contingent consideration payable	(6,439)		(9,600)
Total liabilities	(6,439)		(9,600)
Redeemable noncontrolling interest	$ (55,696)		$ (56,316)

FAIR VALUE (CONTINGENT CONSIDER

FAIR VALUE (CONTINGENT CONSIDERATION TABLE) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable		$ (9,600)
Acquisitions		(8,816)
Payments		9,600
Contingent Consideration Payable Imputed Interest Expense and Other Adjustments		2,377
Ending balance, contingent consideration payable	$ (6,439)	(6,439)
Beginning Balance Business Combination Contingent Consideration Asset		0
Contingent consideration receivable acquired during period		10,370
Contingent Consideration Receivable Imputed Interest Benefit and Other Adjustments		(4,447)
Ending balance, contingent consideration asset	5,923	5,923
VoiceFoundry US
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable		(7,414)
Acquisitions		0
Payments		7,414
Contingent Consideration Payable Imputed Interest Expense and Other Adjustments		0
Ending balance, contingent consideration payable	0	0
VoiceFoundry ASEAN
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable		(2,186)
Acquisitions		0
Payments		2,186
Contingent Consideration Payable Imputed Interest Expense and Other Adjustments		0
Ending balance, contingent consideration payable	0	0
Faneuil
Business acquisitions, Contingent Consideration [Line Items]
Acquisitions		(8,816)
Payments		0
Contingent Consideration Payable Imputed Interest Expense and Other Adjustments		2,377
Ending balance, contingent consideration payable	(6,439)	(6,439)
Faneuil receivable [Member]
Business acquisitions, Contingent Consideration [Line Items]
Beginning Balance Business Combination Contingent Consideration Asset		0
Contingent consideration receivable acquired during period		10,370
Contingent Consideration Receivable Imputed Interest Benefit and Other Adjustments	(4,400)	(4,447)
Ending balance, contingent consideration asset	$ 5,923	$ 5,923

FAIR VALUE (NARRATIVE) (Details

FAIR VALUE (NARRATIVE) (Details) $ in Thousands	3 Months Ended					9 Months Ended
	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2022 USD ($)	Apr. 01, 2022 USD ($)	Mar. 31, 2022 USD ($)
Business acquisitions, Contingent Consideration [Line Items]
Line of credit	$ 955,000	$ 791,000				$ 955,000
Average interest rate on annual borrowings	3.50%
Business Combination Contingent Consideration Liability	$ 6,439	9,600				6,439
Contingent Consideration Receivable Imputed Interest Benefit and Other Adjustments						(4,447)
Increase (decrease) in contingent consideration payable	2,400
VoiceFoundry US
Business acquisitions, Contingent Consideration [Line Items]
Business Combination Contingent Consideration Liability	$ 0	7,414				$ 0
VoiceFoundry US | Discount Rate
Business acquisitions, Contingent Consideration [Line Items]
Business combination contingent consideration measurement input	23.1					23.1
VoiceFoundry ASEAN
Business acquisitions, Contingent Consideration [Line Items]
Business Combination Contingent Consideration Liability	$ 0	2,186				$ 0
VoiceFoundry ASEAN | Discount Rate
Business acquisitions, Contingent Consideration [Line Items]
Business combination contingent consideration measurement input	18.4					18.4
VoiceFoundry Acquisitions
Business acquisitions, Contingent Consideration [Line Items]
Business Combination Contingent Consideration Liability								$ 9,600
Increase (decrease) in contingent consideration payable		$ 100	$ 200	$ 900	$ 4,300
Faneuil
Business acquisitions, Contingent Consideration [Line Items]
Business Combination Contingent Consideration Liability	$ 6,439					$ 6,439	$ 8,800
Increase (decrease) in contingent consideration payable	$ 2,400
Faneuil | Discount Rate
Business acquisitions, Contingent Consideration [Line Items]
Business combination contingent consideration measurement input	19.3					19.3
Faneuil receivable [Member]
Business acquisitions, Contingent Consideration [Line Items]
Contingent Consideration Receivable Imputed Interest Benefit and Other Adjustments	$ (4,400)					$ (4,447)

IMPAIRMENT OF ASSETS (NARRATIVE

IMPAIRMENT OF ASSETS (NARRATIVE) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022
Impaired Long-Lived Assets Held and Used, Asset Description		Assumptions included the amount and timing of estimated future cash flows and assumed discount rates.
Impaired Long-Lived Assets Held and Used, Method for Determining Fair Value		The amount of impairment recognized is the difference between the carrying value of the asset group and its fair value. To determine fair value, the Company used Level 3 inputs in its discounted cash flows analysis.
Leasehold Improvements Internally Developed Software And Right Of Use Lease Asset [Member]
Restructuring impairment losses	$ 2.9	$ 13.3

INCOME TAXES (NARRATIVE) (Detai

INCOME TAXES (NARRATIVE) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Tax Narrative [Line Items]
Net Change in Valuation Allowance	$ 2.5	$ 0.6	$ (1.3)	$ 5.1	$ 6.4	$ 2.4
Valuation allowance on deferred tax assets	25						$ 25
Deferred tax assets, net	19.5						19.5
Deferred tax assets, net of valuation allowance and deferred tax liabilities	15.2						15.2
Deferred Tax Liabilities, Net	$ 4.3						$ 4.3
Effective income tax rate	15.20%				30.60%		17.70%	21.90%
Income Tax Holidays Description							The Company has been granted “Tax Holidays” as an incentive to attract foreign investment by the government of the Philippines. Generally, a Tax Holiday is an agreement between the Company and a foreign government under which the Company receives certain tax benefits in that country, such as exemption from taxation on profits derived from export-related activities. In the Philippines, the Company has been granted multiple agreements with an initial period of tax at 0% for four years, which will be fully expired in 2022 and additional periods at a reduced tax rate, expiring at various times beginning in 2030.
Aggregate effect on income tax expense for income tax holiday jurisdictions	$ 0.3				$ 0.5		$ 1.3	$ 4.2
Diluted net income per share effect for income tax holiday jurisdictions	$ 0.01				$ 0.01		$ 0.03	$ 0.09
United States [Member]
Income Tax Narrative [Line Items]
Income Tax Years under Audit							2017 and 2018
Income Tax Examination, Description							The Company’s U.S. income tax returns filed for the tax years ending December 31, 2017 to present, remain open tax years
Philippines [Member]
Income Tax Narrative [Line Items]
Income Tax Years under Audit							2020
MISSOURI
Income Tax Narrative [Line Items]
Income Tax Years under Audit							2019 and 2020
California
Income Tax Narrative [Line Items]
Income Tax Years under Audit							2017 through 2018
WASHINGTON
Income Tax Narrative [Line Items]
Income Tax Years under Audit							2017 through 2019

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (NARRATIVE) (Details) - USD ($)				1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Nov. 23, 2021	Mar. 25, 2021	Apr. 30, 2021	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Initiation date of current line of credit agreement		Nov. 23, 2021
Line of Credit Facility, Increase (Decrease), Other, Net			$ 300,000,000
Line of Credit Facility, Current Borrowing Capacity		$ 1,500,000,000	$ 1,200,000,000
Initial Borrowing Capacity	$ 1,500,000				$ 1,500,000	$ 1,500,000
Proceeds from factored receivables	100,000,000				100,000,000	100,000,000
Percentage of receivables factored	25				$ 25	$ 25
Credit facility interest rate					3.50%
Line of Credit Facility, Collateral						Letter of credit fees are one eighth of 1% of the stated amount of the letter of credit on the date of issuance, renewal or amendment, plus an annual fee equal to the borrowing margin for Eurodollar loans.
Receivables Held-for-sale, Amount	100,000,000				$ 100,000,000	$ 100,000,000
Line of credit	955,000,000				955,000,000	955,000,000		$ 791,000,000
Average daily utilization under credit facility						1,023,600,000	$ 747,900,000
Remaining borrowing capacity under credit facility	370,000,000				370,000,000	370,000,000
Letters Of Credit Issued Outside Line Of Credit Facility	300,000				300,000	300,000
Line Of Credit Facility Letters Of Credit Issued	$ 2,600,000				2,600,000	$ 2,600,000
Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Credit facility interest rate						0.50%
London Interbank Offered Rate (LIBOR) [Member]
Credit facility interest rate						1.25%
Avtex
Line of Credit Facility, Increase (Decrease), Other, Net				$ 500,000,000
Minimum | Company's net leverage ratio [Member]
Credit facility interest rate	0%
Minimum | Eurodollar [Member]
Credit facility interest rate						1%
Maximum
Proceeds from factored receivables	$ 100,000,000				100,000,000	$ 100,000,000
Receivables Held-for-sale, Amount	$ 100,000,000				$ 100,000,000	$ 100,000,000
Maximum | Company's net leverage ratio [Member]
Credit facility interest rate						0.75%
Maximum | Eurodollar [Member]
Credit facility interest rate						1.75%

DEFERRED REVENUE AND REMAININ_2

DEFERRED REVENUE AND REMAINING PERFORMANCE OBLIGATIONS (NARRATIVE) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Contract with Customer, Liability, Revenue Recognized	$ 196.5	$ 126
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Amount	$ 293.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 years

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (ROLLFORWARD TABLE) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value	$ 551,039	$ 532,301	$ 538,025	$ 457,762
Ending balance, value	524,323	504,961	524,323	504,961
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value	(125,450)	(78,328)	(98,426)	(72,156)
Other comprehensive income (loss) before reclassifications			(52,091)	(29,164)
Amounts reclassified from accumulated other comprehensive income (loss)			(1,387)	2,897
Net current period other comprehensive income (loss)			(53,478)	(26,267)
Ending balance, value	(151,904)	(98,423)	(151,904)	(98,423)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value			(95,547)	(78,139)
Other comprehensive income (loss) before reclassifications			(44,944)	(17,598)
Net current period other comprehensive income (loss)			(44,944)	(17,598)
Ending balance, value	(140,491)	(95,737)	(140,491)	(95,737)
Derivative Valuation, Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value			(40)	8,431
Other comprehensive income (loss) before reclassifications			(7,774)	(11,817)
Amounts reclassified from accumulated other comprehensive income (loss)			(1,184)	3,113
Net current period other comprehensive income (loss)			(8,958)	(8,704)
Ending balance, value	(8,998)	(273)	(8,998)	(273)
Other, Net of Tax.
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance, value			(2,839)	(2,448)
Other comprehensive income (loss) before reclassifications			627	251
Amounts reclassified from accumulated other comprehensive income (loss)			(203)	(216)
Net current period other comprehensive income (loss)			424	35
Ending balance, value	$ (2,415)	$ (2,413)	$ (2,415)	$ (2,413)

ACCUMULATED OTHER COMPREHENSI_4

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (INCOME STATEMENT CLASSIFICATION TABLE) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Presentation of Income Statement Reclassifications [Line Items]
Sales Revenue Services Net	$ 592,453	$ 566,734	$ 1,785,429	$ 1,660,747
Benefit from (provision for) income taxes	(4,489)	(7,939)	(19,797)	(35,271)
Net income	25,015	18,041	91,783	125,438
Accumulated Other Comprehensive Income (Loss)
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other			1,387	(2,897)
Derivative Valuation, Net of Tax
Presentation of Income Statement Reclassifications [Line Items]
Net Income (Loss) - Other			1,184	(3,113)
Reclassification from accumulated other comprehensive income
Presentation of Income Statement Reclassifications [Line Items]
Cost of services	(75)	(80)	(226)	(240)
Net Income (Loss) - Other	(67)	(72)	(203)	(216)
Reclassification from accumulated other comprehensive income | Tax effect
Presentation of Income Statement Reclassifications [Line Items]
Benefit from (provision for) income taxes	448	(247)	414	(1,094)
Provision for income taxes - Other	8	8	23	24
Reclassification from accumulated other comprehensive income | Derivative Valuation, Net of Tax
Presentation of Income Statement Reclassifications [Line Items]
Net income	(1,276)	700	(1,184)	3,113
Foreign Exchange Forward | Reclassification from accumulated other comprehensive income | Foreign Currency Translation Adjustment
Presentation of Income Statement Reclassifications [Line Items]
Sales Revenue Services Net	$ (1,724)	$ 947	$ (1,598)	$ 4,207

WEIGHTED AVERAGE SHARE COUNTS_2

WEIGHTED AVERAGE SHARE COUNTS (DILUTED SHARES TABLE) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Shares used in basic earnings per share calculation	47,207	46,984	47,087	46,857
Effect of dilutive securities:
Restricted stock units	107	364	258	515
Performance-based restricted stock units			9
Total effects of dilutive securities	107	364	267	515
Shares used in dilutive earnings per share calculation	47,314	47,348	47,354	47,372

WEIGHTED AVERAGE SHARE COUNTS_3

WEIGHTED AVERAGE SHARE COUNTS (NARRATIVE) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Restricted Stock Units (RSUs) [Member]
Anti-dilutive options to purchase common stock [Line Items]
Anti-dilutive securities	542	4	377	78

EQUITY-BASED COMPENSATION PLANS

EQUITY-BASED COMPENSATION PLANS (NARRATIVE) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense	$ 5,400	$ 4,600	$ 13,240	$ 11,969
2021 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Description			During 2021, the Company awarded PRSUs that are subject to service and performance vesting conditions. If defined minimum targets are met, the annual value of the PRSUs issued will be between $1.2 million and $4.9 million and vest immediately in 2024. If the defined minimum targets are not met, then no shares will be issued. The number of shares that will be awarded will be based on the Company’s annual revenue and adjusted operating income for the fiscal year 2023. Expense for these awards will begin at the start of the requisite service period, beginning January 1, 2023.
Minimum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Award Vesting Period			4 years
Minimum | 2021 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense						$ 1,200
Maximum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Award Vesting Period			5 years
Maximum | 2021 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense						$ 4,900
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense	5,000	4,100	$ 12,400	$ 10,000
Unrecognized Compensation Expense	45,200		$ 45,200
Non-option Equity Awards Granted			365,515	219,883
Performance Shares [Member] | 2019 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Description			During 2019, the Company awarded performance restricted stock units (“PRSUs”) that were subject to service and performance vesting conditions. If defined minimum targets were met, the annual value of the PRSUs issued would be between $0.4 million and $1.4 million and vest immediately. If the defined minimum targets were not met, then no shares would be issued. The award amounts were based on the Company’s annual adjusted operating income for the fiscal years 2019, 2020 and 2021. Each fiscal year’s adjusted operating income determined the award amount.
Performance Shares [Member] | 2020 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense	$ 300
Share-based Compensation Arrangement by Share-based Payment Award, Description			During 2020, the Company awarded PRSUs that are subject to service and performance vesting conditions. If defined minimum targets are met, the annual value of the PRSUs issued will be between $0.2 million and $2.0 million and vest immediately. If the defined minimum targets are not met, then no shares will be issued. The number of shares awarded are based on the Company’s annual revenue and adjusted operating income for the fiscal years 2021 and 2022. Each fiscal year’s revenue and adjusted operating income will determine the award amount. The Company recognized compensation expense related to the 2020 PRSUs of $0.3 million and $0.8 million, respectively, for the three and nine months ended September 30, 2022. The Company recognized compensation expense related to the 2020 PRSUs of $0.2 million and $1.2 million, respectively, for the three and nine months ended September 30, 2021.
Performance Shares [Member] | 2022 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Description			For the ordinary course annual PRSUs, if defined minimum targets are met, the annual value of the PRSUs issued will be between $0.9 million and $3.5 million and vest immediately in March 2025. If the defined minimum targets are not met, then no shares will be issued. The number of shares that will be awarded will be based on the Company’s annual revenue and adjusted EBITDA for the fiscal year 2024. For the one-time stretch financial goals PRSUs, if defined minimum targets at TTEC Engage and TTEC Digital business segments’ levels are met, the number of shares of PRSUs issued will be between 0.0 million shares and 0.5 million shares and will vest immediately in March 2026. If the defined minimum targets are not met, then no shares will be issued. The number of shares to be awarded will be based on the TTEC Engage and TTEC Digital business segments’ annual revenue and adjusted EBITDA for the fiscal year 2025.
Performance Shares [Member] | 2022 VCP PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Description			F
Performance Shares [Member] | Minimum | 2019 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense								$ 400
Performance Shares [Member] | Minimum | 2020 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense							$ 200
Performance Shares [Member] | Minimum | 2022 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense					$ 900
Performance Shares [Member] | Minimum | 2022 VCP PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Non-option Equity Awards Granted	0
Performance Shares [Member] | Maximum | 2019 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense								$ 1,400
Performance Shares [Member] | Maximum | 2020 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense							$ 2,000
Performance Shares [Member] | Maximum | 2022 PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense					$ 3,500
Performance Shares [Member] | Maximum | 2022 VCP PRSUs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Non-option Equity Awards Granted	500,000
Cost of Services
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense	$ 2,200	2,000	$ 5,400	$ 4,400
Selling General And Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense	$ 3,200	$ 2,600	$ 7,800	$ 7,600

RELATED PARTY TRANSACTIONS (NAR

RELATED PARTY TRANSACTIONS (NARRATIVE) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Related Party Transaction Line Items
Sales Revenue Services Net	$ 592,453	$ 566,734	$ 1,785,429	$ 1,660,747
Airmax [Member]
Related Party Transaction Line Items
Purchases from Related Party			400	500
Accounts Payable Due from Related Party	$ 72		72
Welltok
Related Party Transaction Line Items
Sales Revenue Services Net			500	1,200
Unisys [Member]
Related Party Transaction Line Items
Sales Revenue Services Net			100	$ 400
Willis Towers Watson [Member]
Related Party Transaction Line Items
Purchases from Related Party			$ 900