XML 46 R27.htm IDEA: XBRL DOCUMENT
v3.22.4

THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Fair Value on Recurring and Non-recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Jul. 23, 2021
--- | --- | --- | ---
Non-current Assets |  |  |
Total non-current assets recorded at fair value | $ 0 |  |
Non-current Liabilities |  |  |
Total non-current liabilities recorded at fair value | 0 |  |
Recurring |  |  |
Current Assets: |  |  |
Total current assets recorded at fair value | 68,676 | $ 109,883 |
Recurring | Money market account |  |  |
Current Assets: |  |  |
Total current assets recorded at fair value | 68,676 | 109,883 |
Recurring | Level 1 |  |  |
Current Assets: |  |  |
Total current assets recorded at fair value | 68,676 | 109,883 |
Recurring | Level 1 | Money market account |  |  |
Current Assets: |  |  |
Total current assets recorded at fair value | $ 68,676 | 109,883 |
Non-recurring |  |  |
Non-current Assets |  |  |
Land grant |  | 1,378 |
Total non-current assets recorded at fair value |  | 1,378 |
Non-current Liabilities |  |  |
Land grant obligation |  | (1,378) |
Total non-current liabilities recorded at fair value |  | (1,378) |
Non-recurring | Level 2 |  |  |
Non-current Assets |  |  |
Land grant |  |  |
Total non-current assets recorded at fair value |  |  |
Non-current Liabilities |  |  |
Land grant obligation |  |  |
Total non-current liabilities recorded at fair value |  |  |
Non-recurring | Level 3 |  |  |
Non-current Assets |  |  |
Land grant |  | 1,378 |
Total non-current assets recorded at fair value |  | 1,378 |
Non-current Liabilities |  |  |
Land grant obligation |  | (1,378) |
Total non-current liabilities recorded at fair value |  | (1,378) |
Alabama Graphite |  |  |
Non-current Assets |  |  |
Land grant |  | $ 1,400 |
Alabama Graphite | Non-recurring |  |  |
Non-current Assets |  |  |
Land grant |  |  | $ 1,400

X
- References No definition available. + Details
Name: | us-gaap_AssetsCurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AssetsNoncurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesNoncurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total current assets recorded at fair value. + References No definition available. + Details
Name: | wwr_AssetsFairValueDisclosureCurrent
Namespace Prefix: | wwr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of finance leased asset as of lease inception, classified as non-current. + References No definition available. + Details
Name: | wwr_FinanceLeasedAssetFairValueDisclosureNonCurrent
Namespace Prefix: | wwr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of finance leased obligation as of lease inception, classified as non-current. + References No definition available. + Details
Name: | wwr_FinanceLeasedObligationFairValueDisclosureNonCurrent
Namespace Prefix: | wwr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total non-current assets recorded at fair value. + References No definition available. + Details
Name: | wwr_NonCurrentAssetsAtFairValue
Namespace Prefix: | wwr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total non-current liabilities recorded at fair value. + References No definition available. + Details
Name: | wwr_NonCurrentLiabilitiesAtFairValue
Namespace Prefix: | wwr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=wwr_AlabamaGraphiteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |