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Intangibles
9 Months Ended
Sep. 30, 2023
Intangibles  
Intangibles

(3) Intangibles

All customer relationships are subject to amortization and are amortized over a weighted average period of 18 years, which reflects the remaining economic life of the relationships as of September 30, 2023. The changes in the carrying amount of customer relationships were as follows (in thousands):

Customer relationships as of December 31, 2022

$

1,286,103

Amortization of customer relationships

(53,004)

Customer relationships as of September 30, 2023

$

1,233,099

Future amortization expense is as follows (in thousands):

Remainder of year ending December 31, 2023

$

17,668

Year ending December 31, 2024

70,672

Year ending December 31, 2025

70,672

Year ending December 31, 2026

70,672

Year ending December 31, 2027

70,672

Thereafter

932,743

Total

$

1,233,099