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Significant Customers, Concentrations of Credit Risk, and Geographic Information (Tables)
3 Months Ended
Mar. 31, 2026
Significant Customers, Concentrations of Credit Risk, and Geographic Information  
Schedule of revenues from customers

Three Months Ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

Customer A

 

17

%  

22

%

Customer B

 

12

%  

*

%

*Less than 10% of total revenues

Schedule of revenues by geographic area

Three Months Ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

 

(in thousands)

United States

$

1,267

$

1,102

Asia and Middle East

 

645

369

Europe and other

 

1,162

1,193

Revenue

$

3,074

$

2,664

Schedule of long-lived assets by geographic area

  ​ ​ ​

March 31, 

  ​ ​ ​

December 31, 

 

2026

 

2025

 

(in thousands)

United States

$

1,045

$

1,122

Europe

3,698

3,973

Asia

 

317

340

Total long-lived assets

$

5,060

$

5,435