XML 58 R100.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Stock-Based Compensation Plans and Employee Benefits (401(k) Plan) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |  |
Defined contribution plan, service requirement | 3 months |  |
Gross contributions made by the Company | $ 0.9us-gaap_DefinedContributionPlanCostRecognized | $ 0.9us-gaap_DefinedContributionPlanCostRecognized | $ 0.9us-gaap_DefinedContributionPlanCostRecognized
Defined contribution plan maximum percentage Of matching contribution | 50.00%star_DefinedContributionPlanMaximumPercentageOfMatchingContributionCompanyMayMakeOfFirstTenPercentageOfParticipatingEmployeesAnnualCompensationAtDiscretionOfBoardOfDirectors |  |
Defined contribution plan maximum percentage Of employee compensation | 10.00%star_DefinedContributionPlanMaximumPercentageOfEmployeeCompensationUponWhichCompanyMatchingContributionIsBased |  |

X
- Definition Represents the maximum percentage of a participant's annual compensation upon which the matching Company contribution is based. + References No definition available. + Details
Name: | star_DefinedContributionPlanMaximumPercentageOfEmployeeCompensationUponWhichCompanyMatchingContributionIsBased
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition At the discretion of the Board of Directors, represents the maximum percentage matching contribution which the Company may make of the first ten percent of the participant's annual compensation. + References No definition available. + Details
Name: | star_DefinedContributionPlanMaximumPercentageOfMatchingContributionCompanyMayMakeOfFirstTenPercentageOfParticipatingEmployeesAnnualCompensationAtDiscretionOfBoardOfDirectors
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the period of continuous service with the Company required in order to be eligible to participate in the 401(k) Plan. + References No definition available. + Details
Name: | star_DefinedContributionPlanServiceRequirement
Namespace Prefix: | star_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration