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Intangible Assets
 6 Months Ended
Jun. 30, 2023
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Intangible Assets Intangible Assets
 
The gross amount, accumulated amortization and net carrying amount of intangible assets were as follows:
 
  June 30, 2023December 31, 2022
 Useful Life
(Years)
Gross
Amount
Accumulated
Amortization
Net
Carrying
Amount
Gross
Amount
Accumulated
Amortization
Net
Carrying
Amount
Customer relationships
5-18
$110,469 $(87,519)$22,950 $109,683 $(84,130)$25,553 
Software/Technology
3-15
52,759 (30,550)22,209 51,028 (28,669)22,359 
Covenants not to compete
2-5
12,534 (12,472)62 12,488 (12,416)72 
Other
2-12
10,457 (9,533)924 10,389 (9,358)1,031 
Total $186,219 $(140,074)$46,145 $183,588 $(134,573)$49,015 
 
Amortization expense for the three months ended June 30, 2023 and 2022 was approximately $2.2 million and $2.3 million, respectively.

Amortization expense for the six months ended June 30, 2023 and June 30, 2022 was $4.3 million and $4.6 million, respectively.