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Long-term Debt - Information Per Loan (Details) (USD $) In Thousands, unless otherwise specified	60 Months Ended			28 Months Ended			23 Months Ended			18 Months Ended						15 Months Ended		15 Months Ended
	Dec. 31, 2012 Commerzbank AG $120,000 facility	Dec. 31, 2011 Commerzbank AG $120,000 facility	Dec. 27, 2007 Commerzbank AG $120,000 facility	Dec. 31, 2012 Commerzbank AG $26,000 facility	Dec. 31, 2011 Commerzbank AG $26,000 facility	Sep. 03, 2010 Commerzbank AG $26,000 facility	Dec. 31, 2012 Credit Agricole Corporate and Investment Bank	Dec. 31, 2011 Credit Agricole Corporate and Investment Bank	Jan. 20, 2011 Credit Agricole Corporate and Investment Bank	Dec. 31, 2012 ABN Amro Bank N.V.	Dec. 31, 2011 ABN Amro Bank N.V.	Jul. 21, 2011 ABN Amro Bank N.V.	Dec. 31, 2012 HSH Nordbank AG	Dec. 31, 2011 HSH Nordbank AG	Oct. 03, 2011 HSH Nordbank AG	Dec. 31, 2012 HSH Nordbank AG - Supramax tranche	Oct. 03, 2011 HSH Nordbank AG - Supramax tranche	Dec. 31, 2012 HSH Nordbank AG - Capesize tranche	Oct. 03, 2011 HSH Nordbank AG - Capesize tranche
Long term debt [Line Items]
Loan amount			$ 120,000			$ 26,000			$ 70,000			$ 31,000			$ 64,500		$ 48,500		$ 16,000
Vessels provided as security	Star Gamma, Star Delta, Star Epsilon, Star Zeta and Star Theta			Star Aurora			Star Borealis and Star Polaris			Star Big and Star Mega
Loan reference interest rate	LIBOR			LIBOR			LIBOR			LIBOR						LIBOR or cost of funds (whichever is greater)		LIBOR or cost of funds (whichever is greater)
Loan interest rate margin			0.8% to 1.25%			2.6%			2.7%			2.9%					2.75%		3%
Outstanding borrowings	$ 71,386	$ 84,000		$ 17,064	$ 21,250		$ 62,849	$ 66,790		$ 24,000	$ 29,600		$ 48,815	$ 64,500

X

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9



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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number APB14-1

-Paragraph 31

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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- Definition

Discussion of whether the debt instrument is secured or unsecured, and, if secured, a description of the collateral and guarantees required or provided.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

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- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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