Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Dec. 31, 2014	Jul. 09, 2014	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net loss	$ (213,358)		$ (217,757)	$ (254,368)
Adjustments to reconcile net loss to net cash used in operating activities:
Goodwill impairment	166,067
Depreciation and amortization	36,714		76,330	79,556
Amortization of deferred financing costs	845		2,847	2,379
PIK interest, net			800
Amortization of time charters acquired	(450)
Amortization of nonvested stock compensation expense	20,405		20,680	42,136
Impairment of vessel assets	0		69,278	39,893
(Gain) loss on sale of vessels			(3,555)	900
Impairment of investment	0		2,696	37,877
Realized (gain) loss on sale of investment			(689)	724
Change in assets and liabilities:
Decrease (increase) in due from charterers	(1,545)		213	4,153
Decrease (increase) in prepaid expenses and other current assets	8,343		5,485	1,181
(Decrease) increase in accounts payable and accrued expenses	(39,170)		(5,309)	1,883
Increase (decrease) in deferred revenue	400		430	(339)
Increase in lease obligations	390		719	759
Deferred drydock costs incurred	(6,376)		(2,150)	(12,820)
Net cash used in operating activities	(26,835)		(49,982)	(56,086)
Cash flows from investing activities:
Purchase of vessels, including deposits	(24,473)		(458)	(66,590)
Purchase of other fixed assets	(208)		(329)	(770)
Net proceeds from sale of vessel assets			13,024
Sale of AFS securities			10,489	706
Changes in deposits of restricted cash	(19,420)		(15,853)	9,880
Net cash provided by (used in) investing activities	(44,101)		6,873	(56,774)
Cash flows from financing activities:
Payment of dividend by subsidiary	(1,025)
Cash settlement of non-accredited Note holders	(484)		(101)	(777)
Proceeds from issuance of Series A Preferred Stock			125,000
Payment of Series A Preferred Stock issuance costs			(3,108)
Payment of deferred financing costs	(2,322)		(1,500)	(7,003)
Net cash provided by financing activities	18,273		55,435	150,520
Net increase (decrease) in cash and cash equivalents	(52,663)		12,326	37,660
Cash and cash equivalents at beginning of period	136,077		121,074	83,414
Cash and cash equivalents at end of period	83,414	$ 136,077	133,400	121,074
Secured Debt | $400 Million Credit Facility
Cash flows from financing activities:
Proceeds from Term Loan Facility			400,000
Secured Debt | $100 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility	(3,846)		(60,099)	(7,692)
Secured Debt | $253 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility	(5,075)		(145,268)	(20,300)
Secured Debt | $44 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility	(1,375)		(38,500)	(2,750)
Secured Debt | $22 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility	(750)		(18,625)	(1,500)
Secured Debt | 2014 Term Loan Facilities
Cash flows from financing activities:
Repayments on Term Loan Facility			(2,763)	(2,081)
Proceeds from Term Loan Facility	33,150
Revolving Credit Facility | 2015 Revolving Credit Facility
Cash flows from financing activities:
Proceeds from credit facility				56,218
Repayment of line of credit facility			(56,218)
Line of Credit Facility | $98 Million Credit Facility
Cash flows from financing activities:
Proceeds from credit facility				98,271
Repayment of line of credit facility			(3,000)
Line of Credit Facility | $148 Million Credit Facility
Cash flows from financing activities:
Proceeds from credit facility				148,000
Repayment of line of credit facility			$ (140,383)	(7,616)
Line of Credit Facility | 2010 Credit Facility
Cash flows from financing activities:
Repayment of line of credit facility				$ (102,250)
Predecessor
Cash flows from operating activities:
Net loss		(1,013,250)
Adjustments to reconcile net loss to net cash used in operating activities:
Reorganization Items And Fresh-Start Accounting Adjustments, Net		880,408
Depreciation and amortization		75,952
Amortization of deferred financing costs		4,461
Amortization of time charters acquired		68
Amortization of discount on Convertible Senior Notes		1,592
Interest expense related to the de-designation of the interest rate swap		1,048
Amortization of nonvested stock compensation expense		4,352
Impairment of vessel assets		0
Impairment of investment		0
Change in assets and liabilities:
Decrease (increase) in due from charterers		1,047
Decrease (increase) in prepaid expenses and other current assets		(11,735)
(Decrease) increase in accounts payable and accrued expenses		32,534
Increase (decrease) in deferred revenue		(600)
Increase in lease obligations		195
Deferred drydock costs incurred		(9,253)
Net cash used in operating activities		(33,317)
Cash flows from investing activities:
Purchase of vessels, including deposits		(29,995)
Purchase of other fixed assets		(415)
Changes in deposits of restricted cash		(125)
Net cash provided by (used in) investing activities		(30,535)
Cash flows from financing activities:
Payment of dividend by subsidiary		(2,046)
Proceeds from Rights Offering		100,000
Payment of common stock issuance costs by subsidiary		(111)
Payment of deferred financing costs		(4,515)
Net cash provided by financing activities		77,207
Net increase (decrease) in cash and cash equivalents		13,355
Cash and cash equivalents at beginning of period	$ 136,077	122,722
Cash and cash equivalents at end of period		136,077
Predecessor | Secured Debt | $100 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility		(3,846)
Predecessor | Secured Debt | $253 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility		(10,150)
Predecessor | Secured Debt | $44 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility		(1,375)
Predecessor | Secured Debt | $22 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility		$ (750)