Intangibles

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Intangibles

Intangible assets

Intangible assets other than goodwill were comprised of the following:

	December 31,
	2020		2019
Indefinite-lived licenses	$	100,138	$	90,209
Noncompetition agreements	84,022		103,510
Customer relationships and other	52,566		23,887
	236,726		217,606
Less accumulated amortization	(70,141)		(81,922)
	$	166,585	$	135,684

Noncompetition agreements are generally amortized over three years to 10 years and customer relationships are principally amortized over 10 years to 20 years. Amortization expense from amortizable intangible assets was $13,809, $14,247, and $16,236 for 2020, 2019 and 2018, respectively.

For the years ended December 31, 2020, 2019 and 2018, the Company recognized no impairment charges on any intangible assets other than the goodwill impairment charges discussed in Note 10.

Scheduled amortization expenses from amortizable intangible assets as of December 31, 2020 were as follows: 

	Noncompetition agreements		Customer relationships and other
2021	$	10,274	$	3,143
2022	6,680		3,139
2023	3,883		3,102
2024	1,714		2,851
2025	585		2,660
Thereafter	168		28,248
Total	$	23,304	$	43,143