Software and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 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):

	June 30, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Software for resale	$	136,618	$	(124,271)	$	12,347	$	138,823	$	(122,061)	$	16,762
Software for internal use	415,690		(211,750)		203,940		400,065		(182,310)		217,755
Total software	$	552,308	$	(336,021)	$	216,287	$	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):

	June 30, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Customer relationships	$	502,748	$	(175,681)	$	327,067	$	507,785	$	(160,775)	$	347,010
Trademarks and trade names	27,142		(18,512)		8,630		27,312		(17,353)		9,959
Total other intangible assets	$	529,890	$	(194,193)	$	335,697	$	535,097	$	(178,128)	$	356,969

Schedule of Estimated Intangible Asset Amortization Expense in Future Fiscal Years

Based on capitalized intangible assets as of June 30, 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	$	37,072	$	18,346
2021	61,612		36,379
2022	43,302		36,234
2023	27,501		35,932
2024	20,551		31,520
Thereafter	26,249		177,286
Total	$	216,287	$	335,697