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INTANGIBLE ASSETS
3 Months Ended
Mar. 31, 2026
INTANGIBLE ASSETS  
INTANGIBLE ASSETS

6.    INTANGIBLE ASSETS

Intangible assets on the Company’s condensed consolidated balance sheets consist of the following:

Weighted Average

March 31, 2026

December 31, 2025

  ​ ​ ​

Amortization

  ​ ​ ​

Gross

  ​ ​ ​

Accumulated

  ​ ​ ​

Net Book

  ​ ​ ​

Gross

  ​ ​ ​

Accumulated

  ​ ​ ​

Net Book

Period

Amount

Amortization

Value

Amount

Amortization

Value

Customer lists

 

14.1 years

$

117,495

$

(60,842)

$

56,653

$

117,927

$

(59,006)

$

58,921

Trade name

 

13.7 years

 

16,055

 

(9,646)

 

6,409

 

16,105

 

(9,471)

 

6,634

Design and technologies

 

10.5 years

 

42,023

 

(20,138)

 

21,885

 

42,232

 

(19,396)

 

22,836

Total

$

175,573

$

(90,626)

$

84,947

$

176,264

$

(87,873)

$

88,391

Amortization expense for intangible assets was $3,123 and $3,093 for the three months ended March 31, 2026 and 2025, respectively.

Estimated future intangible asset amortization expense as of March 31, 2026 is as follows:

  ​ ​ ​

Total

Estimated

Year ending December 31, 

  ​ ​ ​

Amortization Expense

Remainder of 2026

 

9,272

2027

11,938

2028

11,181

2029

9,542

2030

9,388

Thereafter

 

33,626

Total estimated amortization expense

$

84,947