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, 2026						December 31, 2025
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Software for internal use	$	473,113	$	(402,166)	$	70,947	$	471,173	$	(394,851)	$	76,322
Software for resale	105,955		(104,839)		1,116		106,594		(105,393)		1,201
Total software	$	579,068	$	(507,005)	$	72,063	$	577,767	$	(500,244)	$	77,523

Amortization of software for internal use is computed using the straight-line method over an estimated useful life of generally three to eight years. Software for internal use amortization expense recorded during the three months ended March 31, 2026 and 2025, totaled $16.5 million and $15.6 million, respectively. These software amortization expense amounts are reflected in depreciation and amortization in the condensed consolidated statements of operations.

Amortization of software for resale is computed using the greater of (a) the ratio of current gross revenues to the total of current and future gross revenues expected to be derived from the software or (b) the straight-line method over the remaining estimated useful life of generally five to ten years. Software for resale amortization expense recorded during the three months ended March 31, 2026 totaled $0.1 million. There was no software for resale amortization expense recorded during the three months ended March 31, 2025. These software amortization expense amounts are reflected in cost of revenue in the condensed consolidated statements of operations.

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, 2026						December 31, 2025
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Customer relationships	$	452,093	$	(310,654)	$	141,439	$	453,414	$	(306,352)	$	147,062
Trademarks and trade names	22,123		(22,123)		—		22,235		(22,235)		—
Total other intangible assets	$	474,216	$	(332,777)	$	141,439	$	475,649	$	(328,587)	$	147,062

Other intangible assets amortization expense recorded during the three months ended March 31, 2026 and 2025, totaled $5.3 million and $5.2 million, respectively. Customer relationships amortization expense amounts are reflected in depreciation and amortization in the condensed consolidated statements of operations.

Based on capitalized intangible assets as of March 31, 2026, 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 2026	$	34,766	$	15,953
2027	23,561		20,985
2028	10,327		18,582
2029	2,454		17,964
2030	885		17,712
Thereafter	70		50,243
Total	$	72,063	$	141,439