2.4.0.8400820 - Disclosure - Preferred, Common Stock and Additional Paid in Capital - Reverse Stock Split (Details)truefalsefalse1false falsefalsed15-10-12to31-12-12http://www.sec.gov/CIK0001386716duration2012-10-16T00:00:002012-12-31T00:00:001true 1sblk_ReverseStockSplitDisclosuresAbstractsblk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Reverse Stock Split Disclosures [Abstract]2false 2us-gaap_StockholdersEquityReverseStockSplitus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Effective as of the opening of trading on October 15, 2012, the Company affected a one-for-fifteen reverse stock split of its common shares. The reverse stock split was approved by shareholders at the Company?s 2012 Annual General Meeting of Shareholders held on September 7, 2012. The reverse stock split reduced the number of the Company?s common shares from 81,012,403 to 5,400,810 and affected all issued and outstanding common shares. No fractional shares were issued in connection to the reverse split. Shareholders who would otherwise hold a fractional share of the Company?s common stock received a cash payment in lieu of such fractional share.falsefalsefalsexbrli:stringItemTypestringDescription of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 54 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187143-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section C false0Description of the reverse stock split3false 2sblk_StockholdersEquityReverseStockSplitRatiosblk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse0015-for-1falsefalsefalsexbrli:stringItemTypestringThe ratio of the reverse stock split.No definition available.false0Reverse stock split ratiofalsePreferred, Common Stock and Additional Paid in Capital - Reverse Stock Split (Details)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.starbulk.com/20130630/role/PreferredCommonStockAndAdditionalPaidInCapitalReverseStockSplitDetails13