Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net loss	$ (138,554)	$ (42,277)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	33,504	36,348
Amortization of deferred financing costs	1,909	1,867
Noncash operating lease expense	676	577
Amortization of nonvested stock compensation expense	957	1,021
Impairment of operating lease right of use asset		223
Impairment of vessel assets	112,814	13,897
Loss (gain) on sale of vessels	486	(611)
Insurance proceeds for protection and indemnity claims	278	389
Insurance proceeds for loss of hire claims	78
Change in assets and liabilities:
Decrease in due from charterers	331	6,588
Decrease in prepaid expenses and other current assets	504	165
Decrease in inventories	4,174	223
(Decrease) increase in accounts payable and accrued expenses	(17,454)	828
(Decrease) increase in deferred revenue	(2,259)	1,859
Decrease in operating lease liabilities	(828)	(786)
Deferred drydock costs incurred	(5,593)	(5,488)
Net cash (used in) provided by operating activities	(8,977)	14,823
Cash flows from investing activities:
Purchase of vessels and ballast water treatment systems, including deposits	(2,275)	(7,754)
Purchase of scrubbers (capitalized in Vessels)	(10,839)	(10,370)
Purchase of other fixed assets	(2,716)	(2,494)
Net proceeds from sale of vessels	14,726	6,309
Insurance proceeds for hull and machinery claims	484	612
Net cash used in investing activities	(620)	(13,697)
Cash flows from financing activities:
Payment of common stock issuance costs		(105)
Cash dividends paid	(8,126)
Payment of deferred financing costs	(283)	(611)
Net cash used in financing activities	(9,760)	(38,451)
Net decrease in cash, cash equivalents and restricted cash	(19,357)	(37,325)
Cash, cash equivalents and restricted cash at beginning of period	162,249	202,761
Cash, cash equivalents and restricted cash at end of period	142,892	165,436
Secured Debt | $133 Million Credit Facility
Cash flows from financing activities:
Proceeds from credit facility	24,000
Repayment of secured debt	(3,280)	(3,160)
Secured Debt | $495 Million Credit Facility
Cash flows from financing activities:
Proceeds from credit facility	11,250
Repayment of secured debt	$ (33,321)	$ (34,575)