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Accounts Receivable
 9 Months Ended
Sep. 30, 2025
Accounts Receivable  
Accounts Receivable

2.Accounts Receivable

Accounts receivable consists of the following (in thousands):

​

​

​

​

​

​

​

​

    

September 30, 

    

December 31, 

​

​

2025

​

2024

Gross Accounts receivable

​

$

41,635

​

$

29,772

Allowance for credit losses

​

 

(1,182)

​

 

(1,256)

Allowance for billing adjustments

​

​

(976)

​

​

(503)

Allowance for volume discounts

​

​

(37)

​

​

-

Accounts receivable, net

​

$

39,440

​

$

28,013

​

Activity in the allowance for the credit losses for the three and nine months ended September 30, 2025 and 2024 was as follows (in thousands):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

    

Nine Months Ended

​

​

September 30, 

​

September 30, 

​

​

2025

    

2024

​

2025

    

2024

Balance at beginning of period

​

$

1,274

​

$

1,081

​

$

1,256

​

$

992

Additions charged to expense

​

​

31

​

​

(18)

​

​

110

​

 

88

Write-offs against allowance

​

​

(118)

​

​

(128)

​

​

(189)

​

 

(145)

Foreign currency translation adjustment

​

​

(5)

​

​

7

​

​

5

​

 

7

Balance at end of period

​

$

1,182

​

$

942

​

$

1,182

​

$

942

​