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INTANGIBLE ASSETS
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
INTANGIBLE ASSETS INTANGIBLE ASSETS
A summary of intangible assets as of December 31, 2021 and 2020 is as follows (in thousands):
 
 December 31, 2021
 Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount
Customer relationships$175,156 $(88,783)$86,373 
Non-compete agreements5,503 (5,503)— 
Trade names24,743 (22,252)2,491 
Technology7,843 (6,885)958 
Licenses850 (774)76 
Total$214,095 $(124,197)$89,898 
 
 December 31, 2020
Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount
Customer relationships$175,418 $(76,541)$98,877 
Non-compete agreements5,569 (5,569)— 
Trade names24,870 (21,794)3,076 
Technology7,879 (6,691)1,188 
Licenses864 (723)141 
Total$214,600 $(111,318)$103,282 
Amortization expense on intangible assets for the years ended December 31, 2021, 2020 and 2019 was $13.9 million, $14.0 million and $14.3 million, respectively. Amortization expense for intangible assets is forecast to be approximately $13 million per year from 2022 through 2025.
The weighted-average amortization period for intangible assets subject to amortization was 13.7 years as of December 31, 2021. The weighted-average amortization period as of December 31, 2021 is 13.7 years for customer relationships, 5.0 years for non-compete agreements, 15.6 years for trade names, 10.0 years for technology and 10.5 years for licenses.