Segment and Geographic Area Information - Revenue by segment information (Details) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment information
Number of segments \| segment													3
Revenue	$ 393,586	$ 373,545	$ 390,849	$ 404,357	$ 399,643	$ 383,030	$ 410,382	$ 393,167	$ 795,206	$ 803,549	$ 1,168,751	$ 1,186,579	$ 1,562,337	$ 1,586,222	$ 1,145,891
Cost of revenue (exclusive of depreciation and amortization)	314,858	295,445	303,831	310,601	306,654	296,685	315,167	294,897	614,432	610,064	909,877	906,749	1,224,735	1,213,403	827,544
Segment profit													337,602	372,819	318,347
Selling, general and administrative expenses (exclusive of depreciation and amortization)	49,678	48,347	51,162	49,677	48,114	44,897	46,378	45,519	100,839	91,897	149,186	136,794	198,864	184,908	220,955
Depreciation and amortization	24,421	25,079	24,779	26,624	33,684	33,410	34,744	36,239	51,403	70,982	76,482	104,393	100,903	138,077	98,890
Impairment of goodwill and other intangible assets	252,399	97,158			48,127						97,158		349,557	48,127	69,437
Related party expense													9,501	12,403	33,431
Interest expense, net	43,216	40,573	39,959	39,701	38,999	39,087	39,229	38,676	79,660	77,905	120,235	116,992	163,449	155,991	129,676
Debt modification and extinguishment costs			1,404			1,067			1,404		1,404	1,067	1,404	1,067	35,512
Sundry expense (income), net	600	(165)	1,311	(2,715)	(905)	2,283	2,122	(229)	(1,404)	1,893	(1,569)	4,176	969	(3,271)	2,295
Other expense (income), net	10,003	406	2,527	1,493	2,567	(1,069)	(907)	(3,621)	4,020	(4,528)	4,424	(5,597)	14,429	(3,030)	(1,297)
Net loss before income taxes	(302,131)	(135,058)	(36,833)	(27,452)	(83,071)	(29,539)	(28,890)	(19,953)	$ (64,285)	$ (48,842)	$ (199,343)	$ (78,382)	(501,474)	(161,453)	(270,552)
ITPS
Segment information
Revenue	306,665	292,607	309,840	325,172	324,267	307,313	330,131	311,936					1,234,284	1,273,647	820,677
Cost of revenue (exclusive of depreciation and amortization)	250,927	241,867	249,589	259,272	255,191	247,021	262,066	246,042					1,001,655	1,010,320	619,694
Segment profit													232,629	263,327	200,983
HS
Segment information
Revenue	69,806	62,132	63,440	61,343	56,293	56,776	56,314	58,632					256,721	228,015	233,595
Cost of revenue (exclusive of depreciation and amortization)	53,634	42,717	43,353	40,341	40,008	37,139	39,538	35,192					180,045	151,877	152,290
Segment profit													76,676	76,138	81,305
LLPS
Segment information
Revenue	17,115	18,806	17,569	17,842	19,083	18,941	23,937	22,599					71,332	84,560	91,619
Cost of revenue (exclusive of depreciation and amortization)	$ 10,297	$ 10,861	$ 10,889	$ 10,988	$ 11,455	$ 12,525	$ 13,563	$ 13,663					43,035	51,206	55,560
Segment profit													$ 28,297	$ 33,354	$ 36,059

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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