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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2022
Income Tax Disclosure [Abstract]  
Schedule of components of company's deferred tax assets and liabilities
 December 31,
 20222021
 (U.S. $ in thousands)
Deferred tax assets   
Tax losses carry forwards$678,334 $667,741 
Inventory related 157  4,210 
Intangible assets 11,321  12,783 
Provision for employee related obligations 927  1,186 
Stock-based compensation 10,242  9,528 
Deferred revenue 1,575  2,257 
Property, plant and equipment 0  630 
Allowance for credit losses 66  143 
Foreign currency losses 0  358 
Research and development credit carry forwards 17,658  15,933 
Research and development capitalization (including Section 174) 11,454  3,717 
Gross deferred tax assets 731,734  718,486 
Valuation allowance (699,694 (693,120
Total deferred tax assets 32,040  25,366 
    
Deferred tax liabilities   
Intangibles assets (10,988 (12,533
Property, plant and equipment (14,652 (17,991
Basis difference in equity method investment (8,852 
-
 
Other items (1,903 (882
Total deferred tax liabilities (36,395 (31,406
Net deferred tax assets (liabilities)$(4,355$(6,040
Schedule of deferred tax assets and liabilities classified in consolidated balance sheets
  December 31,
  20222021
  (U.S. $ in thousands)
Deferred tax assets (under "Other non-current assets") $1,283  $1,301 
Deferred tax liabilities  5,638   7,341 
Net deferred tax assets (liabilities) $(4,355 $(6,040
Schedule of valuation allowance
 Valuation allowance
 U.S. $ in thousands
Balance at January 1, 2020$151,771 
Additions 524,215 
Decrease (14,007
Balance at December 31, 2020 661,979 
Additions 31,141 
Balance at December 31, 2021 693,120 
Additions 8,788 
Decrease$(2,214
Balance at December 31, 2022$699,694 
Schedule of loss before Income Taxes
  2022 20212020
 (U.S. $ in thousands)
Domestic $(28,725$(50,193$(381,935
Foreign 10,931  (16,644 (74,636
 $(17,794$(66,837$(456,571
 
Schedule of components of income taxes
 2022 2021 2020
 (U.S. $ in thousands)
Current     
Domestic $7,301  $(14,146 $4,992 
Foreign 942   2,141   (3,902
  8,243   (12,005  1,090 
Deferred     
Domestic  (1,440  8,745   (4,112
Foreign (1,349  (646  (13,372
 (2,789  8,099   (17,484
Total income taxes$5,454  $(3,906 $(16,394
Schedule of reconciliation of income tax rate
  2022 2021 2020
Statutory tax rate  23.0% 23.0%  23.0%
Reduced tax rate under Israeli benefit programs (4.3 6.2   (1.4
Release of Exempt Profits (see below) (16.0 -   - 
Goodwill impairment 
-
  
-
   (17.5
Stock-based compensation expense (16.1 (3.5  (0.5
Non-deductible expenses (0.8 (0.1  
-
 
Earnings taxed under foreign law 24.7  10.8   (4.1
Valuation Allowance (18.6 (42.7  3.1 
Changes in uncertain tax positions (22.1 17.9   1 
Deferred Tax due to different tax rates -  (6.1  0.1 
Other (0.5 0.3   (0.1
Effective income tax rate (30.7)% 5.8%  3.6%
Schedule of beginning and ending balance of uncertain tax positions
  2022   2021   2020 
 (U.S. $ in thousands)
Balance at beginning of year$3,015  $23,389  $25,517 
Additions for tax positions related to the current year 4,684   3,826   312 
Foreign currency impact 181   2,918   3,017 
Decrease related to settlements with tax authorities and lapse of applicable statutes of limitation (500  (26,685  (5,457
Classification to deferred tax assets  (1,337  (433  - 
Balance at end of year$6,043  $3,015  $23,389