Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets

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Goodwill and Intangible Assets
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets GOODWILL AND INTANGIBLE ASSETS
Goodwill
The changes in the carrying amount of goodwill are presented in the following table:
Balance at December 31, 2019 $ 62,834 
Balance at December 31, 2020 $ 62,834 
Goodwill acquired (see Note 3) 112,310 
Balance at December 31, 2021 $ 175,144 
The Company conducted its annual goodwill impairment test during the fourth quarter of 2021 and determined that goodwill was not impaired. No impairment charge was recorded in 2020.

Intangible Assets

The following table presents our intangible assets, net as of December 31, 2021:
  Gross Intangibles Accumulated Amortization Net Intangibles Weighted Average Amortization Period (Years)
Referral network $ 42,300  $ 3,525  $ 38,775  5.2
Non-compete agreements 2,700  450  2,250  0.2
  $ 45,000  $ 3,975  $ 41,025  5.3

Amortization expense related to intangible assets was $4.0 million for the year ended December 31, 2021.

As of December 31, 2021, expected amortization expense for the unamortized acquired intangible assets for the next five years and thereafter is as follows:
Amount
2022 $ 7,950 
2023 7,950 
2024 7,500 
2025 7,050 
2026 7,050 
Thereafter 3,525 
$ 41,025