Software and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Carrying Amount and Accumulated Amortization of Software and Other Intangible Assets

The carrying amount and accumulated amortization of the Company's software assets subject to amortization at each balance sheet date are as follows (in thousands):

	March 31, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Software for resale	$	136,739	$	(122,317)	$	14,422	$	138,823	$	(122,061)	$	16,762
Software for internal use	405,794		(195,045)		210,749		400,065		(182,310)		217,755
Total software	$	542,533	$	(317,362)	$	225,171	$	538,888	$	(304,371)	$	234,517

The carrying amount and accumulated amortization of the Company’s other intangible assets subject to amortization at each balance sheet date are as follows (in thousands):

	March 31, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Customer relationships	$	501,039	$	(166,172)	$	334,867	$	507,785	$	(160,775)	$	347,010
Trademarks and trade names	27,090		(17,801)		9,289		27,312		(17,353)		9,959
Total other intangible assets	$	528,129	$	(183,973)	$	344,156	$	535,097	$	(178,128)	$	356,969

Schedule of Estimated Intangible Asset Amortization Expense in Future Fiscal Years

Based on capitalized intangible assets as of March 31, 2020, estimated amortization expense amounts in future fiscal years are as follows (in thousands):

Fiscal Year Ending December 31,	Software Amortization		Other Intangible Assets Amortization
Remainder of 2020	$	54,143	$	27,493
2021	58,348		36,275
2022	40,407		36,143
2023	25,977		35,871
2024	20,083		31,456
Thereafter	26,213		176,918
Total	$	225,171	$	344,156