Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 153,237	$ 187,155
Accounts receivable, net of a reserve of $3,244 and $3,169, respectively	29,719	32,311
Prepaid expenses	6,507	4,531
Inventories	22,913	28,081
Collateral on derivatives	3,482	909
Fair value of derivative assets – current	7,734	8,479
Other current assets	671	558
Total current assets	224,263	262,024
Noncurrent assets:
Vessels and vessel improvements, at cost, net of accumulated depreciation of $268,743 and $261,725, respectively	900,659	891,877
Advances for vessel purchases	6,020	3,638
Advances for BWTS and other assets	2,507	2,722
Deferred drydock costs, net	43,268	42,849
Other fixed assets, net of accumulated depreciation of $1,665 and $1,623, respectively	295	310
Operating lease right-of-use assets	24,129	23,006
Restricted cash – noncurrent	2,618	2,599
Fair value of derivative assets – noncurrent	6,022	8,184
Total noncurrent assets	985,518	975,185
Total assets	1,209,781	1,237,209
Current liabilities:
Accounts payable	19,290	20,129
Accrued interest	1,726	3,061
Other accrued liabilities	19,566	24,097
Fair value of derivative liabilities – current	345	163
Current portion of operating lease liabilities	21,778	22,045
Unearned charter hire revenue	8,492	9,670
Current portion of long-term debt	49,800	49,800
Total current liabilities	120,997	128,965
Noncurrent liabilities:
Total debt	272,749	284,682
Noncurrent portion of operating lease liabilities	3,583	3,173
Other noncurrent accrued liabilities	743	1,208
Total noncurrent liabilities	277,075	289,063
Total liabilities	398,072	418,028
Commitments and contingencies (Note 7)
Stockholders' equity:
Preferred stock, $0.01 par value, 25,000,000 shares authorized, none issued as of March 31, 2023 and December 31, 2022	0	0
Common stock, $0.01 par value, 700,000,000 shares authorized, 13,065,060 and 13,003,702 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	131	130
Additional paid-in capital	966,261	966,058
Accumulated deficit	(168,373)	(163,556)
Accumulated other comprehensive income	13,690	16,549
Total stockholders' equity	811,709	819,181
Total liabilities and stockholders' equity	1,209,781	1,237,209
Ultraco Global Debt Facility
Noncurrent liabilities:
Total debt	169,154	181,183
Convertible Bond Debt
Noncurrent liabilities:
Total debt	$ 103,595	$ 103,499