Subsequent Events (Details) (USD $) | 3 Months Ended | 6 Months Ended | 0 Months Ended | | 0 Months Ended | 2 Months Ended | 1 Months Ended | 3 Months Ended | 0 Months Ended | 1 Months Ended | 4 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended | 0 Months Ended | | | | | | 0 Months Ended |
Share data in Millions, except Per Share data, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Oct. 30, 2014 | Oct. 07, 2014 | Oct. 07, 2014 | Aug. 12, 2014 | Jan. 31, 2015 | 31-May-14 | Apr. 30, 2014 | Jun. 30, 2014 | Oct. 30, 2014 | Jul. 30, 2014 | Oct. 31, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Mar. 31, 2015 | Apr. 30, 2014 | Sep. 30, 2014 | Mar. 31, 2015 | Sep. 22, 2014 | Sep. 22, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Oct. 27, 2014 | Oct. 30, 2014 | Oct. 30, 2014 | Jun. 30, 2014 | Sep. 30, 2014 | Mar. 31, 2015 | Jun. 30, 2014 | 31-May-14 | Nov. 10, 2014 |
| Subsequent Event [Member] | Golden Ocean [Member] | Golden Ocean [Member] | Dividend Declared [Member] | Common Stock [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | KSL Santiago [Member] | KSL Salvador [Member] | Golden Zhejiang [Member] | Golden Zhejiang [Member] | Golden Zhejiang [Member] | KSL San Francisco [Member] | KSL Santos [Member] | Capital Addition Purchase Commitments [Member] | Capital Addition Purchase Commitments [Member] | Capital Addition Purchase Commitments [Member] | Term Loan Facility [Member] | Term Loan Facility [Member] | Term Loan Facility [Member] |
| vessel | Subsequent Event [Member] | Subsequent Event [Member] | Subsequent Event [Member] | Scenario, Forecast [Member] | vessel | company | vessel | Subsequent Event [Member] | Subsequent Event [Member] | Subsequent Event [Member] | Subsequent Event [Member] | Subsequent Event [Member] | Scenario, Forecast [Member] | Common Stock [Member] | Common Stock [Member] | Common Stock [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | | | Subsequent Event [Member] | Frontline 2012 [Member] | Frontline 2012 [Member] | | Subsequent Event [Member] | Frontline 2012 [Member] | | | Subsequent Event [Member] |
| | vessel | vessel | | Golden Ocean [Member] | t | vessel | | vessel | | vessel | company | vessel | company | | Subsequent Event [Member] | Scenario, Forecast [Member] | Subsequent Event [Member] | Subsequent Event [Member] | | | | Subsequent Event [Member] | Subsequent Event [Member] | | | Scenario, Forecast [Member] | | | |
| | | | | | | t | | | | | vessel | | | | | | vessel | | | | | | | | | | | | |
Subsequent Event [Line Items] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Number of Capesize Newbuildings acquired | ' | ' | ' | ' | 14 | ' | ' | ' | ' | ' | 5 | ' | ' | ' | ' | 10 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Capesize Drybulk Size Range | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 180,000 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Purchase of vessel | ' | ' | $24,085,000 | $0 | ' | ' | ' | ' | ' | ' | ' | ' | ' | $37,600,000 | ' | ' | ' | ' | ' | ' | ' | $37,600,000 | $37,600,000 | ' | ' | ' | $36,500,000 | $37,600,000 | ' | ' | ' | ' | ' | ' |
Loan drawdowns | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 60,000,000 |
Dividends payable per share | $0.20 | $0.18 | $0.38 | $0.85 | ' | ' | ' | $0.20 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Number of SPCs expected to be acquired | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 25 | ' | ' | ' | ' | ' | ' | 12 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Capesize Newbuildings Delivered | ' | ' | ' | ' | ' | ' | ' | ' | ' | 2 | ' | 3 | 2 | ' | 2 | 1 | 3 | ' | ' | ' | ' | 1 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Shares issued | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 15.5 | 31 | 31 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Unrecorded Unconditional Purchase Obligation | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 252,000,000 | 490,000,000 | 404,000,000 | ' | ' | ' |
Number of SPCs acquired | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 5 | ' | ' | ' | ' | 13 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Cash acquired on purchase of SPCs | ' | ' | 43,412,000 | 0 | ' | ' | ' | ' | ' | ' | 43,400,000 | ' | ' | ' | ' | 25,100,000 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Expected vessels in fleet | ' | ' | ' | ' | ' | 72 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Expected number of newbuildings | ' | ' | ' | ' | ' | ' | 36 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Equity interest issued or issuable ratio | ' | ' | ' | ' | ' | ' | ' | ' | 0.13749 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Number of shares issued to Golden Ocean | ' | ' | ' | ' | ' | ' | ' | ' | 61.5 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Merger Agreement, Possible Termination Fee | ' | ' | ' | ' | ' | 10,000,000 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Proceeds from Legal Settlements | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 3,200,000 | 9,700,000 | 3,300,000 | ' | ' | ' | ' | ' | ' | ' | ' |
Term loan facility | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | $420,000,000 | $135,000,000 | ' |