Software and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Carrying Amount and Accumulated Amortization of Other Intangible Assets

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):

	December 31, 2018							December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Balance		Gross Carrying Amount		Accumulated Amortization			Net Balance
Customer relationships	$	297,991	$	(131,187	)	$	166,804	$	305,218	$	(116,677	)	$	188,541
Trademarks and tradenames		16,348		(15,025	)		1,323		16,646		(13,906	)		2,740
	$	314,339	$	(146,212	)	$	168,127	$	321,864	$	(130,583	)	$	191,281

Estimated Intangible Asset Amortization Expense in Future Fiscal Years

Based on capitalized intangible assets at December 31, 2018, and assuming no impairment of these intangible assets, estimated amortization expense amounts in future fiscal years are as follows (in thousands):

Fiscal Year Ending December 31,	Software Amortization		Other Intangible Assets Amortization
2019	$	49,229	$	21,825
2020		39,014		20,944
2021		25,382		20,451
2022		12,228		20,303
2023		6,349		20,000
Thereafter		5,026		64,604
Total	$	137,228	$	168,127