XML 104 R87.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Commitments and Contingencies (Narrative) (Details) $ in Millions | Dec. 31, 2016 | Jan. 22, 2015 USD ($) a
--- | --- | ---
Other Commitments [Line Items] |  |
Land subject to litigation | a |  | 1,250
Land | Real Estate Sales |  |
Other Commitments [Line Items] |  |
Unpaid purchase price | $ |  | $ 114.0
Unpaid purchase price, interest rate |  | 12.00%
Noncontrolling interest, ownership percentage by noncontrolling owners | 4.30% |

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 Unpaid Purchase Price + References No definition available. + Details
Name: | star_UnpaidPurchasePrice
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unpaid Purchase Price, Interest Rate + References No definition available. + Details
Name: | star_UnpaidPurchasePriceInterestRate
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
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_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_TransactionTypeAxis=star_RealEstateSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |