Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of goodwill

The change in the carrying amount of goodwill for the year is as follows:

	December 31,
	2020		2019
	(In Thousands)
Beginning balance	$	100,069	$	98,569
Goodwill acquired or adjusted during the year		217,879		1,500
Ending balance	$	317,948	$	100,069

Schedule of finite-lived intangible assets

Activity in intangible assets for the years ended December 31, 2020, 2019 and 2018, was as follows:

	Gross Carrying Amount		Accumulated Amortization			Net Value
	(In Thousands)
Balance as of January 1, 2018	$	20,133	$	(14,430	)	$	5,703
Amortization of intangible assets		—		(1,312	)		(1,312	)
Balance as of December 31, 2018		20,133		(15,742	)		4,391
Intangible assets acquired		500		—			500
Amortization of intangible assets		—		(1,119	)		(1,119	)
Balance as of December 31, 2019		20,633		(16,861	)		3,772
Intangible assets acquired		33,014		—			33,014
Amortization of intangible assets		—		(6,449	)		(6,449	)
Balance as of December 31, 2020	$	53,647	$	(23,310	)	$	30,337

Schedule of finite-lived intangible assets, future amortization expense

Estimated amortization expense for each of the next five years and thereafter is as follows (in thousands):

2021	$	6,208
2022		5,450
2023		4,722
2024		4,013
2025		3,306
Thereafter		6,638
Total	$	30,337