Software and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2022

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, 2022						December 31, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Software for internal use	$	443,487	$	(296,535)	$	146,952	$	440,242	$	(283,109)	$	157,133
Software for resale	126,934		(126,934)		—		127,904		(127,255)		649
Total software	$	570,421	$	(423,469)	$	146,952	$	568,146	$	(410,364)	$	157,782

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, 2022						December 31, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Customer relationships	$	507,264	$	(238,384)	$	268,880	$	507,962	$	(230,152)	$	277,810
Trademarks and trade names	23,701		(19,054)		4,647		23,839		(18,645)		5,194
Total other intangible assets	$	530,965	$	(257,438)	$	273,527	$	531,801	$	(248,797)	$	283,004

Schedule of Estimated Intangible Asset Amortization Expense in Future Fiscal Years

Based on capitalized intangible assets as of March 31, 2022, 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 2022	$	46,543	$	27,385
2023	44,509		36,231
2024	27,692		31,754
2025	20,353		23,232
2026	7,801		23,232
Thereafter	54		131,693
Total	$	146,952	$	273,527