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Fair Value Measurements - Fair value on a recurring basis - Significant observable inputs (Table) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Derivative [Line Items] |  |
Interest rate swaps - asset position | $ 0 us-gaap_DerivativeAssetsNoncurrent | $ 91 us-gaap_DerivativeAssetsNoncurrent
designated as cash flow hedges |  |
Derivative [Line Items] |  |
Interest rate swaps - asset position | 0 us-gaap_DerivativeAssetsNoncurrent / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember |
Derivative Liabilities | 7,732 us-gaap_DerivativeLiabilities / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember |
not designated as cash flow hedges |  |
Derivative [Line Items] |  |
Interest rate swaps - asset position |  | 91 us-gaap_DerivativeAssetsNoncurrent / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember
Derivative Liabilities |  | 0 us-gaap_DerivativeLiabilities / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember
Interest Rate Swaps | designated as cash flow hedges |  |
Derivative [Line Items] |  |
Interest rate swaps - asset position | 0 us-gaap_DerivativeAssetsNoncurrent / us-gaap_DerivativeByNatureAxis = sblk_InterestRateSwapsMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember |
Derivative Liabilities | 7,732 us-gaap_DerivativeLiabilities / us-gaap_DerivativeByNatureAxis = sblk_InterestRateSwapsMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember |
Interest Rate Swaps | not designated as cash flow hedges |  |
Derivative [Line Items] |  |
Interest rate swaps - asset position |  | 91 us-gaap_DerivativeAssetsNoncurrent / us-gaap_DerivativeByNatureAxis = sblk_InterestRateSwapsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember
Derivative Liabilities |  | $ 0 us-gaap_DerivativeLiabilities / us-gaap_DerivativeByNatureAxis = sblk_InterestRateSwapsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 + Details
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