XML 30 R77.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Equity (Stock Repurchase Program) (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Sep. 30, 2013
Stock Repurchase Program |  |
Repurchase of common stock, authorized amount |  | $ 50,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1
Treasury stock, shares, acquired | 44,000 us-gaap_TreasuryStockSharesAcquired |
Treasury stock value acquired including acquisition costs | 600,000 star_TreasuryStockValueAcquiredIncludingAcquisitionCosts |
Treasury stock acquired, average cost per share | $ 12.66 us-gaap_TreasuryStockAcquiredAverageCostPerShare |
Available repurchase of common stock, authorized amount | $ 28,500,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 |

X
- Details
Name: | star_StockRepurchaseProgramAbstract
Namespace Prefix: | star_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of treasury stock acquired excluding costs for acquiring the shares. + References No definition available. + Details
Name: | star_TreasuryStockValueAcquiredIncludingAcquisitionCosts
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
Name: | us-gaap_TreasuryStockAcquiredAverageCostPerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration