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Basis of Presentation and General Information (Tables) | 12 Months Ended
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Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Subsidiaries | The accompanying consolidated financial statements include the operations, assets and liabilities of the Company, and of its Subsidiaries listed below.
Subsidiary |  | Vessel Name |  | Type |  | Built
Maxeikosiepta Shipping Corporation (“Maxeikosiepta”)(1) |  | Paraskevi |  | Panamax |  | January 2003
Marindou Shipping Corporation (“Marindou”)(1) |  | Maria |  | Panamax |  | April 2003
Maxeikosiexi Shipping Corporation (“Maxeikosiexi”)(1) |  | Koulitsa |  | Panamax |  | April 2003
Avstes Shipping Corporation (“Avstes”)(1) |  | Vassos |  | Panamax |  | February 2004
Kerasies Shipping Corporation (“Kerasies”)(1) |  | Katerina |  | Panamax |  | May 2004
Marathassa Shipping Corporation (“Marathassa”)(1) |  | Maritsa |  | Panamax |  | January 2005
Maxeikositessera Shipping Corporation (“Maxeikositessera”)(2) |  | Efrossini |  | Panamax |  | February 2012
Glovertwo Shipping Corporation (“Glovertwo”)(2) |  | Zoe |  | Panamax |  | July 2013
Shikokutessera Shipping Inc. (“Shikokutessera”)(2) |  | Kypros Land |  | Panamax |  | January 2014
Shikokupente Shipping Inc. (“Shikokupente”)(2) |  | Kypros Sea |  | Panamax |  | March 2014
Gloverfour Shipping Corporation (“Gloverfour”)(2) |  | Kypros Bravery |  | Panamax |  | January 2015
Shikokuokto Shipping Corporation. (“Shikokuokto”)(2) |  | Kypros Sky |  | Panamax |  | March 2015
Subsidiary |  | Vessel Name |  | Type |  | Built
Gloverfive Shipping Corporation (“Gloverfive”)(2) |  | Kypros Loyalty |  | Panamax |  | June 2015
Gloversix Shipping Corporation (“Gloversix”)(2) |  | Kypros Spirit |  | Panamax |  | July 2016
Pemer Shipping Ltd. (“Pemer”)(1) |  | Pedhoulas Merchant |  | Kamsarmax |  | March 2006
Petra Shipping Ltd. (“Petra”)(1) |  | Pedhoulas Trader |  | Kamsarmax |  | May 2006
Pelea Shipping Ltd. (“Pelea”)(1) |  | Pedhoulas Leader |  | Kamsarmax |  | March 2007
Vassone Shipping Corporation (“Vassone”)(2) |  | Pedhoulas Commander |  | Kamsarmax |  | May 2008
Maxeikosi Shipping Corporation (“Maxeikosi”)(1) |  | Pedhoulas Builder |  | Kamsarmax |  | May 2012
Maxeikositria Shipping Corporation (“Maxeikositria”)(1) |  | Pedhoulas Fighter |  | Kamsarmax |  | August 2012
Maxeikosiena Shipping Corporation (“Maxeikosiena”)(1) |  | Pedhoulas Farmer |  | Kamsarmax |  | September 2012
Youngone Shipping Corporation (“Youngone”)(2) |  | Pedhoulas Cherry |  | Kamsarmax |  | July 2015
Youngtwo Shipping Corporation (“Youngtwo”)(2) |  | Pedhoulas Rose |  | Kamsarmax |  | January 2017
Pinewood Shipping Corporation (“Pinewood”)(2)(3) |  | Pedhoulas Cedrus |  | Kamsarmax |  | June 2018
Marinouki Shipping Corporation (“Marinouki”)(1) |  | Marina |  | Post-Panamax |  | January 2006
Soffive Shipping Corporation (“Soffive”)(1) |  | Sophia |  | Post-Panamax |  | June 2007
Vasstwo Shipping Corporation (“Vasstwo”)(1) |  | Xenia |  | Post-Panamax |  | August 2006
Eniaprohi Shipping Corporation (“Eniaprohi”)(1) |  | Eleni |  | Post-Panamax |  | November 2008
Eniadefhi Shipping Corporation (“Eniadefhi”)(1) |  | Martine |  | Post-Panamax |  | February 2009
Maxdodeka Shipping Corporation (“Maxdodeka”)(1) |  | Andreas K |  | Post-Panamax |  | September 2009
Pentakomo Shipping Corporation (“Pentakomo”)(2) |  | Agios Spyridonas |  | Post-Panamax |  | January 2010
Maxdekatria Shipping Corporation (“Maxdekatria”)(1) |  | Panayiota K |  | Post-Panamax |  | April 2010
Maxdeka Shipping Corporation (“Maxdeka”)(2) |  | Venus Heritage |  | Post-Panamax |  | December 2010
Shikoku Friendship Shipping Company (“Shikoku”)(2) |  | Venus History |  | Post-Panamax |  | September 2011
Maxenteka Shipping Corporation (“Maxenteka”)(2) |  | Venus Horizon |  | Post-Panamax |  | February 2012
Shikokuepta Shipping Inc. (“Shikokuepta”)(2) |  | Troodos Sun |  | Post-Panamax |  | January 2016
Shikokuexi Shipping Inc. (“Shikokuexi”)(2) |  | Troodos Air |  | Post-Panamax |  | March 2016
Maxpente Shipping Corporation (“Maxpente”)(1) |  | Kanaris |  | Capesize |  | March 2010
Eptaprohi Shipping Corporation (“Eptaprohi”)(1) |  | Pelopidas |  | Capesize |  | November 2011
Maxtessera Shipping Corporation (“Maxtessera”)(2) |  | Lake Despina |  | Capesize |  | January 2014
Shikokuennia Shipping Corporation (“Shikokuennia”)(2) |  | Mount Troodos |  | Capesize |  | November 2009
Monagrouli Shipping Corporation (“Monagrouli”)(2)(5) |  | TBN - S 1772 |  | Post-Panamax |  | April 2020
Gloverthree Shipping Corporation (“Gloverthree”)(2) |  | — |  | — |  | —
Staloudi Shipping Corporation (“Staloudi”)(1) |  | — |  | — |  | —
Gloverseven Shipping Corporation (“Gloverseven”)(2) |  | — |  | — |  | —
Kyotofriendo One Shipping Inc. (“Kyotofriendo One”)(2)(4) |  | — |  | — |  | —
Kyotofriendo Two Shipping Inc. (“Kyotofriendo Two”)(2)(3) |  | — |  | — |  | —
Maxeikosipente Shipping Corporation (“Maxeikosipente”)(1) |  | — |  | — |  | —
(1) | Incorporated under the laws of the Republic of Liberia.
(2) | Incorporated under the laws of the Republic of the Marshall Islands.
(3) | On July 29, 2016, the Shipsales Contract relating to Hull No. 1552, initially contracted by Kyotofriendo Two, was novated to Pinewood. Under an agreement with an unaffiliated third party, upon delivery of the vessel, named Pedhoulas Cedrus, to Pinewood in June 2018, 100 shares of Series A Preferred Stock of Pinewood were issued to the unaffiliated third party for proceeds in the equivalent of $16,875 at the time of issuance, which were used to finance part of the cost of such vessel. Such shares have preference over shares of common stock of Pinewood with respect to distributions by, and liquidation of, Pinewood. Furthermore, under this agreement, Pinewood agreed to (i) pay its own expenses out of its own funds, (ii) keep its assets and funds separate from the assets and funds of the Company, (iii) refrain from holding its assets and/or creditworthiness as being available to satisfy any of the obligations of the Company and (iv) take, or refrain from taking, certain other actions designed to ensure that the assets of Pinewood are not available to creditors of Safe Bulkers or its other subsidiaries.
(4) | Kyotofriendo One had contracted to acquire the Kamsarmax class newbuild vessel with Hull No. 1551, which upon her delivery from the shipyard in January 2017 was sold. Refer to Notes 3 and 17.
(5) Estimated completion date for newbuild vessel as of December 31, 2019.
Charterers Concentration | For the years ended December 31, 2017, 2018 and 2019, the following charterers individually accounted for more than 10% of the Company’s time charter, voyage charter and ballast bonus revenues as follows:
|  | December 31,
|  | 2017 |  | 2018 |  | 2019
Glencore Agriculture B.V |  | — | % |  | 14.73 | % |  | 21.03 | %
Bunge S.A. |  | 12.72 | % |  | 13.76 | % |  | 10.37 | %

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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
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