Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 113,879	$ 187,155
Accounts receivable, net of a reserve of $2,933 and $3,169, respectively	24,594	32,311
Prepaid expenses	5,832	4,531
Inventories	26,881	28,081
Collateral on derivatives	4,380	909
Fair value of derivative assets – current	8,653	8,479
Other current assets	652	558
Total current assets	184,871	262,024
Noncurrent assets:
Vessels and vessel improvements, at cost, net of accumulated depreciation of $289,819 and $261,725, respectively	914,108	891,877
Advances for vessel purchases	0	3,638
Advances for BWTS and other assets	1,984	2,722
Deferred drydock costs, net	37,756	42,849
Other fixed assets, net of accumulated depreciation of $1,324 and $1,623, respectively	952	310
Operating lease right-of-use assets	10,892	23,006
Restricted cash – noncurrent	2,575	2,599
Fair value of derivative assets – noncurrent	5,435	8,184
Total noncurrent assets	973,702	975,185
Total assets	1,158,573	1,237,209
Current liabilities:
Accounts payable	20,938	20,129
Accrued interest	2,092	3,061
Other accrued liabilities	19,198	24,097
Fair value of derivative liabilities – current	585	163
Current portion of operating lease liabilities	10,109	22,045
Unearned charter hire revenue	8,201	9,670
Current portion of long-term debt – Global Ultraco Debt Facility	49,800	49,800
Current portion of long-term debt – Convertible Bond Debt, net of debt discount and debt issuance costs	103,791	0
Total current liabilities	214,714	128,965
Noncurrent liabilities:
Long-term debt – Global Ultraco Debt Facility, net of debt discount and debt issuance costs	341,881	181,183
Convertible Bond Debt, net of debt discount and debt issuance costs	0	103,499
Fair value of derivative liabilities - noncurrent	444	0
Noncurrent portion of operating lease liabilities	2,766	3,173
Other noncurrent accrued liabilities	696	1,208
Total noncurrent liabilities	345,787	289,063
Total liabilities	560,501	418,028
Commitments and contingencies (Note 8)
Stockholders' equity:
Preferred stock, $0.01 par value, 25,000,000 shares authorized, none issued as of September 30, 2023 and December 31, 2022	0	0
Common stock, $0.01 par value, 700,000,000 shares authorized, 9,319,177 and 13,003,702 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively	93	130
Additional paid-in capital	746,898	966,058
Accumulated deficit	(162,418)	(163,556)
Accumulated other comprehensive income	13,499	16,549
Total stockholders' equity	598,072	819,181
Total liabilities and stockholders' equity	$ 1,158,573	$ 1,237,209