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Note 7 - Investments in Privately-Held Raw Material Companies (Tables)
6 Months Ended
Jun. 30, 2025
Notes Tables  
Investment [Table Text Block]
  

Investment Balance as of

      
  

June 30,

  

December 31,

 

Accounting

 

Ownership

 

Company

 

2025

  

2024

 

Method

 

Percentage

 

Nanjing JinMei Gallium Co., Ltd.

 $592  $592 

Consolidated

  ** 85.5%

ChaoYang JinMei Gallium Co., Ltd.

  1,820   1,820 

Consolidated

  ** 85.5%

Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd.

  1,346   1,346 

Consolidated

  ** 85.5%

ChaoYang ShuoMei High Purity Semiconductor Materials Co., Ltd.

  3,122   3,122 

Consolidated

  **** 75.0%

ChaoYang XinMei High Purity Semiconductor Materials Co., Ltd.

  7,331   7,331 

Consolidated

  *** 58.5%
  $14,211  $14,211      
              

Beijing JiYa Semiconductor Material Co., Ltd.

 $4,177  $4,867 

Equity

  39%

Xiaoyi XingAn Gallium Co., Ltd.

  5,515   5,304 

Equity

  ** 25%

ChaoYang KaiMei Quartz Co., Ltd.

  4,638   3,895 

Equity

  ***** 40%
  $14,330  $14,066      
              

Emeishan Jia Mei High Purity Metals Co., Ltd.

  406   551 

Fair value

  ****** 10%
  $406  $551      
Equity Method Investments, Summarized Income Information [Table Text Block]
  

Three Months Ended

  

Six Months Ended

 
  

June 30,

  

June 30,

 
  

2025

  

2024

  

2025

  

2024

 

Net revenue

 $7,064  $9,338  $15,722  $17,442 

Gross profit

 $1,862  $4,161  $3,806  $8,090 

Operating income

 $1,010  $4,035  $2,292  $7,406 

Net income (loss)

 $(197) $2,044  $774  $5,182