Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 224,743	$ 97,416
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	35,513	32,951
Amortization of operating lease right-of-use assets	21,083	10,536
Amortization of deferred drydocking costs	9,728	6,236
Amortization of debt discount and debt issuance costs	1,627	5,443
Loss on debt extinguishment	4,173	99
Gain on sale of vessel	(9,336)	(3,962)
Net unrealized (gain)/loss on fair value of derivatives	(8,517)	24,193
Stock-based compensation expense	4,542	2,235
Drydocking expenditures	(18,527)	(10,737)
Changes in operating assets and liabilities:
Accounts payable	650	4,639
Accounts receivable	(5,098)	(10,645)
Accrued interest	(1,241)	2,385
Inventories	(8,622)	(5,467)
Operating lease liabilities current and noncurrent	(21,076)	(11,304)
Collateral on derivatives	13,881	(31,370)
Fair value of derivatives, other current and noncurrent assets	(183)	(1,150)
Other accrued liabilities	(2,332)	1,898
Prepaid expenses	(1,223)	(1,455)
Unearned charter hire revenue	2,706	8,974
Net cash provided by operating activities	242,491	120,915
Cash flows from investing activities:
Purchase of vessels and vessel improvements	(781)	(109,385)
Advances for vessel purchases	(4,125)	(2,200)
Purchase of scrubbers and ballast water systems	(5,695)	(4,557)
Proceeds from hull and machinery insurance claims	0	245
Proceeds from sale of vessel	14,944	9,159
Purchase of other fixed assets	(253)	(29)
Net cash provided by/(used in) investing activities	4,090	(106,767)
Cash flows from financing activities:
Repurchase of Convertible Bond Debt	(14,188)	0
Proceeds from issuance of shares under ATM Offering, net of commissions	0	27,242
Cash received from exercise of stock options	85	56
Cash used to settle net share equity awards	(2,351)	(986)
Equity offerings issuance costs	201	(292)
Financing costs paid to lenders	(18)	(614)
Dividends paid	(81,577)	0
Net cash (used in)/provided by financing activities	(135,198)	22,648
Net increase in cash, cash equivalents and restricted cash	111,383	36,796
Cash, cash equivalents and restricted cash at beginning of period	86,222	88,849
Cash, cash equivalents and restricted cash at end of period	197,605	125,645
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid during the period for interest	12,861	17,462
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	38,956	22,499
Accruals for vessel purchases and vessel improvements included in Other accrued liabilities	0	500
Accruals for scrubbers and ballast water treatment systems included in Accounts payable and Other accrued liabilities	3,916	3,259
Accruals for dividends payable included in Other accrued liabilities and Other noncurrent accrued liabilities	1,551	0
Accrual for issuance costs for ATM Offering included in Other accrued liabilities	0	104
Accruals for debt issuance costs included in Accounts payable and Other accrued liabilities	0	509
New Ultraco Debt Facility
Cash flows from financing activities:
Proceeds from debt	0	16,500
Repayments of long-term debt	0	(24,258)
Norwegian Bond Debt Facility
Cash flows from financing activities:
Repayments of long-term debt	0	(4,000)
New Ultraco Revolver Facility
Cash flows from financing activities:
Proceeds from debt	0	55,000
Repayments of long-term debt	0	(55,000)
Super Senior Facility
Cash flows from financing activities:
Repayments of long-term debt	0	(15,000)
Holdco Revolving Credit Facility
Cash flows from financing activities:
Proceeds from debt	0	24,000
Global Ultraco Debt Facility
Cash flows from financing activities:
Repayments of long-term debt	$ (37,350)	$ 0