DEBT - 2007 Credit Facility (Details) - Predecessor $ in Thousands							1 Months Ended	3 Months Ended
	Aug. 01, 2012 USD ($)	Dec. 21, 2011 USD ($)	Jan. 26, 2009 USD ($)	Sep. 30, 2007	Jul. 20, 2007 USD ($) facility item	Jul. 07, 2007	Aug. 31, 2012 USD ($)	Sep. 30, 2007	Jul. 09, 2014 facility item
Line of Credit Facility
Line of Credit Facility
Commitment fee on unused daily average unutilized commitment (as a percent)						0.20%
Line of Credit Facility | Short Term Credit Facility
Line of Credit Facility
Repayment of line of credit facility					$ 77,000
Line of Credit Facility | 2007 Credit Facility
Line of Credit Facility
Number of vessels to be acquired under the Credit Facility | item					9
Collateral security maintenance test (as a percent)					130.00%
Number of credit facilities terminated | facility					2				2
Applicable margin over reference rate for interest payable, before increase (as a percent)					0.85%
Consolidated net worth threshold, base amount					$ 263,300
Maximum percentage of en bloc purchase price which may be financed by loans (as a percent)					100.00%
Final payment amount			$ 381,182
Commitment fee on unused daily average unutilized commitment (as a percent)			0.70%	0.25%
Purchase price of vessels					$ 1,111,000
Consolidated leverage ratio					5.5
Consolidated net worth threshold, percentage of the value of any subsequent primary equity offerings (as a percent)					80.00%
Number of vessels mortgaged | item					9				35
Period collateral was pledged prior to effective date of Credit Facility								30 days
Ratio of EBITDA to interest expense					2
Minimum cash required to be maintained by each collateralized vessel	$ 750
Minimum cash balance required per vessel mortgaged, before increase	$ 500
Remedy period available to post additional collateral or reduce the amount of the revolving loans and/or letters of credit outstanding								30 days
Repayment of line of credit facility		$ 52,500					$ 57,893
Line of Credit Facility | 2007 Credit Facility | LIBOR
Line of Credit Facility
Reference rate					One, three or six,-month LIBOR
Line of Credit Facility | 2007 Credit Facility | Minimum
Line of Credit Facility
Consolidated net worth based on equity offerings completed					$ 674,555
Capacity of Vessels in Deadweight Tonnage | item					25,000
Line of Credit Facility | 2007 Credit Facility | Maximum
Line of Credit Facility
Age of drybulk carriers at the time of delivery					10 years
Age of drybulk carriers at the time of maturity of the credit facility					18 years
Available working capital borrowings					$ 50,000
Capacity of Vessels in Deadweight Tonnage | item					180,000
Line of Credit Facility | 2005 Credit Facility
Line of Credit Facility
Repayment of line of credit facility					$ 206,233
Line of Credit Facility | January 2009 Credit Facility Agreements | LIBOR
Line of Credit Facility
Applicable margin over reference rate for interest payable, before increase (as a percent)			2.00%
Line of Credit Facility | August 2012 Credit Facility Agreements
Line of Credit Facility
Percentage of upfront fee received by consenting lenders (as a percent)	0.25%
Repayment of line of credit facility							$ 57,893
Line of Credit Facility | August 2012 Credit Facility Agreements | LIBOR
Line of Credit Facility
Applicable margin over reference rate for interest payable, before increase (as a percent)	2.00%		2.00%
Applicable margin over reference rate (as a percent)	3.00%
Line of Credit Facility | December 2011 Credit Facility Agreements
Line of Credit Facility
Percentage of upfront fee received by consenting lenders (as a percent)		0.25%
Repayment of line of credit facility		$ 52,500
Letter of credit | 2007 Credit Facility
Line of Credit Facility
Maximum borrowing capacity					$ 50,000
Period from March 31, 2009 through March 31, 2012 | Line of Credit Facility | 2007 Credit Facility
Line of Credit Facility
Reduction in maximum borrowing capacity			$ 12,500
Period from June 30, 2012 through July 20, 2017 | Line of Credit Facility | 2007 Credit Facility
Line of Credit Facility
Reduction in maximum borrowing capacity			$ 48,195