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Note O - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
  

Years ended December 31,

 
  

2021

  

2020

  

2019

 

Domestic

 $(21,229) $(20,288)  (35,279)

Foreign

  (32,931)  (30,936)  (16,108)

Total loss before income taxes

 $(54,160) $(51,224)  (51,387)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Current:

 

2021

  

2020

  

2019

 

Federal

 $  $41  $ 

State

  2   2   16 

Foreign

        97 

Total

 $2  $43  $113 

Deferred:

            

Federal

 $  $(172) $16,375 

State

        1,716 

Foreign

     7,357   (3,542)

Total

 $  $7,185  $14,549 
             

Income tax (benefit) expense

 $2  $7,228  $14,662 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
  

2021

  

2020

 

NOL carryforward

 $44,448  $31,526 

Inventory reserves

  2,872   2,241 

Unrealized gains and losses

  69   59 

Share-based compensation

  645   618 

Foreign tax credit

  4,599   4,599 

Research and development credits

  9,879   9,008 

Interest

  2,840   1,784 

ASC 842 Assets

  1,740   1,671 

Other

  728   784 

Deferred tax assets

  67,820   52,290 

Less valuation allowance

  (57,721)  (43,462)

Deferred tax assets, net

  10,099   8,828 

Depreciation and amortization

  (8,600)  (7,402)

ASC 842 Liabilities

  (1,499)  (1,426)

Deferred tax liabilities

  (10,099)  (8,828)

Deferred tax assets, net

 $  $ 
Summary of Valuation Allowance [Table Text Block]
  

2021

  

2020

  

2019

 

Beginning Balance, January 1

 $43,462  $25,736  $ 

Change charged to expense/(income)

  13,822   17,137   25,736 

Change charged to currency translation adjustment

  437   589    

Ending Balance, December 31

 $57,721  $43,462  $25,736 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

2021

  

2020

  

2019

 

Expected taxes at statutory rate

 $(11,374) $(10,775) $(10,791)

PPP loan forgiveness

  (1,308)      

Non-deductible/non-taxable items

  897   1,132   962 

Foreign rate differences

  107   1,153   590 

Foreign permanent differences

  (1,320)  (1,002)  (671)

Changes in valuation allowance

  13,822   17,137   25,736 

Share-based compensation

  468   426   607 

Research and development credits

  (872)  (744)  (1,616)

Alternative Minimum Tax

     (172)   

Foreign other

     12   27 

Other, net

  (418)  61   (182)

Tax (benefit) expense

 $2  $7,228  $14,662 
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
  

2021

  

2020

  

2019

 

Unrecognized tax benefits — January 1

 $181  $181  $181 

Gross increases — tax positions in prior period

         

Gross decreases — tax positions in prior period

         

Unrecognized tax benefits — December 31

 $181  $181  $181