Business Acquisition, Cost of Acquired Entity, Cash Paid by Third Party

No definition available.

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- Definition

Contribution, Cash Call, Amount Paid by Third Party

+ References

No definition available.

+ Details

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- Definition

Maximum optional purchase, percentage.

+ References

No definition available.

+ Details

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- Definition

Noncontrolling Interest, Decrease from Equity Issuance Transaction Costs

+ References

No definition available.

+ Details

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- Definition

Noncontrolling Interest, Increase from Equity Issuance, Gross

+ References

No definition available.

+ Details

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.31)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 27

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 20

-Article 7

+ Details

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- Details

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Period Type:	duration

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of Net Income (Loss) attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 55

-Paragraph 4J

-URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686

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- Details

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Noncontrolling Interest (Details) (USD $)	3 Months Ended		12 Months Ended
Noncontrolling Interest (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2012	Dec. 31, 2014
Noncontrolling Interest [Line Items]
Maximum PGM production purchase percentage			100.00%swc_MaximumOptionalPurchasePercentage
Net income (loss) attributable to noncontrolling interest	$ (115,000)	$ (533,000)
Noncontrolling interest	18,365,000us-gaap_MinorityInterest			18,480,000us-gaap_MinorityInterest
Additional Paid-in Capital [Member]
Noncontrolling Interest [Line Items]
Issuance of noncontrolling interest			42,500,000
Expenses incurred for issuance of noncontrolling interest			1,100,000
Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interest	18,400,000			18,500,000
Stillwater Canada Inc [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners			25.00%
Cost of acquired entity, cash paid by third party			81,250,000
Contribution, initial cash call, amount paid by third party			13,600,000