Consolidated Statements of Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Consolidated Statements of Comprehensive Income
Revenue.	$ 395,507	$ 364,936	$ 1,182,378	$ 1,090,038
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)	$ 304,622	$ 286,925	$ 897,193	$ 844,555
Selling, general and administrative	48,062	43,321	148,646	134,611
Depreciation and amortization	16,659	17,317	50,452	52,052
Restructuring charges, net	183	2,716	1,572	4,599
Impairment losses			3,569	1,120
Total operating expenses	369,526	350,279	1,101,432	1,036,937
Income from operations	25,981	14,657	80,946	53,101
Other income (expense)
Interest income	522	1,401	1,291	3,940
Interest expense	(4,041)	(8,410)	(13,537)	(22,634)
Other income (expense), net	2,713	989	5,376	(10,786)
Total other income (expense)	(806)	(6,020)	(6,870)	(29,480)
Income before income taxes	25,175	8,637	74,076	23,621
Benefit from (provision for) income taxes	(5,196)	(1,893)	(20,007)	(4,648)
Net income	19,979	6,744	54,069	18,973
Net income attributable to noncontrolling interest	(1,878)	(1,369)	(5,168)	(3,489)
Net income (loss) attributable to TTEC stockholders	18,101	5,375	48,901	15,484
Other comprehensive income (loss)
Foreign currency translation adjustments	(9,138)	(2,255)	(2,758)	(28,139)
Derivative valuation, gross	1,255	7,463	11,517	6,679
Derivative valuation, tax effect	(353)	(2,015)	(3,102)	(2,744)
Other, net of tax	37	103	54	317
Total other comprehensive income (loss)	(8,199)	3,296	5,711	(23,887)
Total comprehensive income (loss)	11,780	10,040	59,780	(4,914)
Less: Comprehensive income attributable to noncontrolling interest	(1,693)	(1,313)	(4,983)	(3,271)
Comprehensive income attributable to TTEC stockholders	$ 10,087	$ 8,727	$ 54,797	$ (8,185)
Weighted average shares outstanding
Basic	46,481	46,172	46,335	46,021
Diluted	46,768	46,316	46,693	46,390
Net income per share attributable to TTEC stockholders
Basic	$ 0.39	$ 0.12	$ 1.06	$ 0.34
Diluted	0.39	0.12	1.05	0.33
Dividends declared per share outstanding	$ 0.32	$ 0.28	$ 0.32	$ 0.28