Name:	star_DenominatorForBasicAndDilutedEarningsPerShareOrHpuShareAbstract
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The income or loss from continuing operations during the period which is attributable to the parent and is available to common shareholders.

+ References

No definition available.

+ Details

Name:	star_IncomeLossFromContinuingOperationsAttributableToParentAndAvailableToCommonShareholders
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Data Type:	xbrli:monetaryItemType
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- Definition

The income or loss from continuing operations during the period which is attributable to the parent and is available to HPU holders.

+ References

No definition available.

+ Details

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- Definition

This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items and the cumulative effect of accounting changes before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any.

+ References

No definition available.

+ Details

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Namespace Prefix:	star_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Net Income (Loss) Attributable to Parent and Available to Common Shareholders

+ References

No definition available.

+ Details

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Namespace Prefix:	star_
Data Type:	xbrli:monetaryItemType
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- Definition

Net Income (Loss) Attributable to Parent and Available to HPU Holders

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

The average number of shares of High Performance common stock (a separate class of stock) issued and outstanding that are used in calculating basic and diluted EPS.

+ References

No definition available.

+ Details

Name:	star_WeightedAverageNumberOfHpuSharesOutstandingBasicAndDiluted
Namespace Prefix:	star_
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Balance Type:	na
Period Type:	duration

- Definition

Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

+ Details

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Period Type:	duration

- Definition

Per basic and diluted share amount, after tax, of the gain (loss) on the disposal of discontinued operations, when the per share amount is the same.

+ References

No definition available.

+ Details

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- Details

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- Definition

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

The amount of net income (loss) from continuing operations per each basic and diluted share of common stock or unit when the per share amount is the same for both basic and diluted shares.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
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Period Type:	duration

- Definition

Per basic and diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation, when the per share amount is the same.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
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Period Type:	duration

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- Details

Name:	us-gaap_StatementClassOfStockAxis=star_HpuMember
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- Details

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