Name:	us-gaap_AssetsNoncurrentAbstract
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Data Type:	xbrli:stringItemType
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Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Name:	us-gaap_RestrictedCashAndCashEquivalentsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Indicates line item in statement of financial position that includes cash and cash equivalents restricted to withdrawal or usage, classified as noncurrent.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586

Name:	us-gaap_RestrictedCashAndCashEquivalentsNoncurrentAssetStatementOfFinancialPositionExtensibleList
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This element represents the noncurrent portion of investments which are not defined as or included in marketable (debt, equity, or other) securities that are pledged or subject to withdrawal restrictions.

No definition available.

Name:	us-gaap_RestrictedInvestmentsNoncurrent
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Period Type:	instant

Total current assets recorded at fair value.

No definition available.

Name:	wwr_AssetsFairValueDisclosureCurrent
Namespace Prefix:	wwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Total non-current assets recorded at fair value.

No definition available.

Name:	wwr_NonCurrentAssetsAtFairValue
Namespace Prefix:	wwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the current restricted cash included in assets held for sale.

No definition available.