Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 115,703	$ 187,155
Accounts receivable, net of a reserve of $2,965 and $3,169, respectively	28,396	32,311
Prepaid expenses	6,533	4,531
Inventories	21,695	28,081
Collateral on derivatives	676	909
Fair value of derivative assets – current	9,814	8,479
Vessel held for sale	11,052	0
Other current assets	440	558
Total current assets	194,309	262,024
Noncurrent assets:
Vessels and vessel improvements, at cost, net of accumulated depreciation of $277,924 and $261,725, respectively	925,632	891,877
Advances for vessel purchases	0	3,638
Advances for BWTS and other assets	1,622	2,722
Deferred drydock costs, net	40,469	42,849
Other fixed assets, net of accumulated depreciation of $1,706 and $1,623, respectively	291	310
Operating lease right-of-use assets	15,472	23,006
Restricted cash – noncurrent	2,575	2,599
Fair value of derivative assets – noncurrent	6,331	8,184
Total noncurrent assets	992,392	975,185
Total assets	1,186,701	1,237,209
Current liabilities:
Accounts payable	22,520	20,129
Accrued interest	3,567	3,061
Other accrued liabilities	20,920	24,097
Fair value of derivative liabilities – current	8	163
Current portion of operating lease liabilities	14,274	22,045
Unearned charter hire revenue	6,002	9,670
Current portion of long-term debt	49,800	49,800
Total current liabilities	117,091	128,965
Noncurrent liabilities:
Total debt	457,311	284,682
Noncurrent portion of operating lease liabilities	2,847	3,173
Other noncurrent accrued liabilities	695	1,208
Total noncurrent liabilities	460,853	289,063
Total liabilities	577,944	418,028
Commitments and contingencies (Note 8)
Stockholders' equity:
Preferred stock, $0.01 par value, 25,000,000 shares authorized, none issued as of June 30, 2023 and December 31, 2022	0	0
Common stock, $0.01 par value, 700,000,000 shares authorized, 9,310,443 and 13,003,702 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	93	130
Additional paid-in capital	745,636	966,058
Accumulated deficit	(151,697)	(163,556)
Accumulated other comprehensive income	14,725	16,549
Total stockholders' equity	608,757	819,181
Total liabilities and stockholders' equity	1,186,701	1,237,209
Ultraco Global Debt Facility
Noncurrent liabilities:
Total debt	353,618	181,183
Convertible Bond Debt
Noncurrent liabilities:
Total debt	$ 103,693	$ 103,499