Software and Other Intangible Assets

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

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):


	September 30, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Software for resale	$	138,017	$	(127,535)	$	10,482	$	138,823	$	(122,061)	$	16,762
Software for internal use	424,054		(230,297)		193,757		400,065		(182,310)		217,755
Total software	$	562,071	$	(357,832)	$	204,239	$	538,888	$	(304,371)	$	234,517

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 September 30, 2020 and 2019, totaled $2.1 million and $2.8 million, respectively. Software for resale amortization expense recorded during the nine months ended September 30, 2020 and 2019, totaled $6.1 million and $8.8 million, respectively. These software amortization expense amounts are reflected in cost of revenue in the condensed consolidated statements of operations.

Amortization of software for internal use is computed using the straight-line method over an estimated useful life of generally one to ten years. Software for internal use amortization expense recorded during the three months ended September 30, 2020 and 2019, totaled $17.9 million and $15.7 million, respectively. Software for internal use amortization expense recorded during the nine months ended September 30, 2020 and 2019, totaled $53.1 million and $39.4 million, respectively. These software amortization expense amounts are reflected in depreciation and amortization 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):


	September 30, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Balance		Gross Carrying Amount		Accumulated Amortization		Net Balance
Customer relationships	$	506,270	$	(185,981)	$	320,289	$	507,785	$	(160,775)	$	347,010
Trademarks and trade names	27,385		(19,417)		7,968		27,312		(17,353)		9,959
Total other intangible assets	$	533,655	$	(205,398)	$	328,257	$	535,097	$	(178,128)	$	356,969

Other intangible assets amortization expense recorded during the three months ended September 30, 2020 and 2019, totaled $9.3 million and $9.4 million, respectively. Other intangible assets amortization expense recorded during the nine months ended September 30, 2020 and 2019, totaled $27.8 million and $22.5 million, respectively.

Based on capitalized intangible assets as of September 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	$	18,476	$	9,199
2021	64,445		36,632
2022	45,825		36,483
2023	29,267		36,168
2024	20,160		31,713
Thereafter	26,066		178,062
Total	$	204,239	$	328,257