XML 150 R53.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Land and Development (Acquisitions, Dispositions, and Redeemable Noncontrolling Interest) (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) a parcel | Sep. 30, 2016 USD ($) | Dec. 31, 2016 USD ($) | Jan. 22, 2015 a
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Number of land parcels sold | parcel |  |  | 1 |  |  |
Area of land parcels sold | a |  |  | 1,250 |  |  |
Land development revenue | $ 25,962,000 | $ 31,554,000 | $ 178,722,000 | $ 74,389,000 |  |
Land development cost of sales | 27,512,000 | 22,004,000 | 165,888,000 | 50,842,000 |  |
Noncontrolling interest increase (percent) |  |  |  |  | 10.70% |
Noncontrolling interest, decrease from redemptions or purchase of interests |  |  |  |  | $ 10,800,000 |
Noncontrolling interest, ownership percentage by parent |  |  |  |  | 95.70% |
Impairment of assets | 595,000 | $ 8,741,000 | 15,292,000 | 11,753,000 |  |
Redeemable noncontrolling interests | 3,513,000 |  | 3,513,000 |  | $ 5,031,000 |
Land & Development |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Impairment of assets |  |  | 10,100,000 | $ 3,800,000 |  |
Not Currently Redeemable |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Redeemable noncontrolling interests | $ 0 |  | 0 |  | $ 1,300,000 |
Lennar |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Area of land subject to litigation (in acres) | a |  |  |  |  |  | 1,250
Prince George's County, Maryland |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Land development revenue |  |  | 114,000,000 |  |  |
Land development cost of sales |  |  | $ 106,300,000 |  |  |

X
- Definition Area of Land Parcels Sold + References No definition available. + Details
Name: | star_AreaofLandParcelsSold
Namespace Prefix: | star_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

X
- Definition Costs of Land Sales + References No definition available. + Details
Name: | star_CostsofLandSales
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Land acreage subject to litigation. + References No definition available. + Details
Name: | star_LandSubjecttoLitigation
Namespace Prefix: | star_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Noncontrolling Interest, Ownership Percentage by Parent, Period Increase (Decrease) + References No definition available. + Details
Name: | star_NoncontrollingInterestOwnershipPercentagebyParentPeriodIncreaseDecrease
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Land Parcels Sold + References No definition available. + Details
Name: | star_NumberofLandParcelsSold
Namespace Prefix: | star_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Revenue from the sale of land in the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_LandSales
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569655-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4616395-111683 + Details
Name: | us-gaap_MinorityInterestDecreaseFromRedemptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
Name: | us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RealEstatePropertiesAxis=us-gaap_LandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | star_RedemptionStatusAxis=star_NotCurrentlyRedeemableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationCaseAxis=star_U.S.HomeCorporationLennarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationCaseAxis=star_PrinceGeorgesCountyMarylandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |