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Consolidated Statements of Stockholders Equity (USD $)
In Thousands, except Share data
Total
Common Stock
Additional Paid-in Capital
Other Comprehensive loss
Accumulated deficit
BALANCE, value at Dec. 31, 2011 $ 434,213us-gaap_StockholdersEquity $ 54us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 520,261us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ 0us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
$ (86,102)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
BALANCE, shares at Dec. 31, 2011   5,357,224us-gaap_CommonStockSharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Net (loss)/income for the year ended (314,521)us-gaap_NetIncomeLoss       (314,521)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Accumulated other comprehensive loss 0us-gaap_OtherComprehensiveIncomeLossNetOfTax        
Issuance of vested and non-vested shares and amortization of stock-based compensation, value (Note 14) 1,546sblk_IssuanceVestedNonVestedSharesAmortizationStockBasedCompensationValue 1sblk_IssuanceVestedNonVestedSharesAmortizationStockBasedCompensationValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,545sblk_IssuanceVestedNonVestedSharesAmortizationStockBasedCompensationValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of vested and non-vested shares and amortization of stock-based compensation, shares (Note 14)   105,316us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Dividends declared and paid ($0.675 per share) (3,631)us-gaap_DividendsCommonStock       (3,631)us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Repurchase and cancellation of common shares, value (Note 10) (861)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue (1)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(860)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Repurchase and cancellation of common shares, shares (Note 10)   (61,730)us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
BALANCE, value at Dec. 31, 2012 116,746us-gaap_StockholdersEquity 54us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
520,946us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
0us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
(404,254)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
BALANCE, shares at Dec. 31, 2012   5,400,810us-gaap_CommonStockSharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Net (loss)/income for the year ended 1,850us-gaap_NetIncomeLoss       1,850us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Accumulated other comprehensive loss 0us-gaap_OtherComprehensiveIncomeLossNetOfTax        
Issuance of common stock (Note 10), value 146,022us-gaap_StockIssuedDuringPeriodValueNewIssues 234us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
145,788us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock (Note 10), shares   23,388,861us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of vested and non-vested shares and amortization of stock-based compensation, value (Note 14) 1,488sblk_IssuanceVestedNonVestedSharesAmortizationStockBasedCompensationValue 3sblk_IssuanceVestedNonVestedSharesAmortizationStockBasedCompensationValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,485sblk_IssuanceVestedNonVestedSharesAmortizationStockBasedCompensationValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of vested and non-vested shares and amortization of stock-based compensation, shares (Note 14)   270,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
BALANCE, value at Dec. 31, 2013 266,106us-gaap_StockholdersEquity 291us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
668,219us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
0us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
(402,404)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
BALANCE, shares at Dec. 31, 2013   29,059,671us-gaap_CommonStockSharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Net (loss)/income for the year ended (11,723)us-gaap_NetIncomeLoss       (11,723)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Accumulated other comprehensive loss (378)us-gaap_OtherComprehensiveIncomeLossNetOfTax     (378)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
 
Issuance of common stock - Acquisition of 33% of Interchart (Note 10), value 328sblk_StockIssuedDuringPeriodValueNewIssuesInterchartTransaction   328sblk_StockIssuedDuringPeriodValueNewIssuesInterchartTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock - Acquisition of 33% of Interchart (Note 10), shares   22,598sblk_StockIssuedDuringPeriodSharesNewIssuesInterchartTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of vested and non-vested shares and amortization of stock-based compensation, value (Note 14) 5,834sblk_IssuanceVestedNonVestedSharesAmortizationStockBasedCompensationValue 5sblk_IssuanceVestedNonVestedSharesAmortizationStockBasedCompensationValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
5,829sblk_IssuanceVestedNonVestedSharesAmortizationStockBasedCompensationValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of vested and non-vested shares and amortization of stock-based compensation, shares (Note 14)   580,342us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock Merger and Pappas Transaction (Note 1), value 616,272sblk_StockIssuedDuringPeriodValueNewIssuesMergerAndPappasTransaction 520sblk_StockIssuedDuringPeriodValueNewIssuesMergerAndPappasTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
615,752sblk_StockIssuedDuringPeriodValueNewIssuesMergerAndPappasTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock Merger and Pappas Transaction (Note 1), shares   51,988,494sblk_StockIssuedDuringPeriodSharesNewIssuesMergerAndPappasTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock Heron Transaction in escrow account (Note 1), value 25,079sblk_StockIssuedDuringPeriodValueNewIssuesHeronTransaction 21sblk_StockIssuedDuringPeriodValueNewIssuesHeronTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
25,058sblk_StockIssuedDuringPeriodValueNewIssuesHeronTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock Heron Transaction in escrow account (Note 1), shares   2,115,706sblk_StockIssuedDuringPeriodSharesNewIssuesHeronTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock Excel Transactions (Note 1), value 252,784sblk_StockIssuedDuringPeriodValueNewIssuesExcelTransaction 257sblk_StockIssuedDuringPeriodValueNewIssuesExcelTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
252,527sblk_StockIssuedDuringPeriodValueNewIssuesExcelTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock Excel Transactions (Note 1), shares   25,659,425sblk_StockIssuedDuringPeriodSharesNewIssuesExcelTransaction
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
BALANCE, value at Dec. 31, 2014 $ 1,154,302us-gaap_StockholdersEquity $ 1,094us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 1,567,713us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (378)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
$ (414,127)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
BALANCE, shares at Dec. 31, 2014   109,426,236us-gaap_CommonStockSharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember