Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 193,881	$ 156,845
Restricted cash	30,694	30,499
Prepaid expenses and other current assets	63,275	57,158
Total current assets	287,850	244,502
Property and equipment, net	516,939	526,002
Goodwill	67,801	42,017
Intangibles, net	8,058	9,412
Other long-term assets	9,174	9,364
Total assets	889,822	831,297
Current Liabilities:
Unearned passenger revenues	314,233	252,199
Accounts payable and accrued expenses	70,327	65,055
Lease liabilities - current	1,554	1,923
Long-term debt - current	0	47
Total current liabilities	386,114	319,224
Long-term debt, less current portion	624,501	621,778
Deferred tax liabilities	0	2,118
Other long-term liabilities	1,575	1,943
Total liabilities	1,012,190	945,063
Commitments and contingencies
Redeemable noncontrolling interests	27,542	37,784
Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests	104,510	111,298
STOCKHOLDERS’ DEFICIT
Preferred stock, $0.0001 par value, 1,000,000 shares authorized; 62,000 Series A shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	0	0
Common stock, $0.0001 par value, 200,000,000 shares authorized; 54,495,338 and 53,390,082 issued, 54,363,515 and 53,332,150 outstanding as of September 30, 2024 and December 31, 2023, respectively	6	5
Additional paid-in capital	107,739	97,139
Accumulated deficit	(334,623)	(322,208)
Total stockholders' deficit	(226,878)	(225,064)
Total liabilities, mezzanine equity and stockholders' deficit	889,822	831,297
Series A Redeemable Convertible Preferred Stock [Member]
Current Liabilities:
Series A redeemable convertible preferred stock, 165,000 shares authorized; 62,000 shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	$ 76,968	$ 73,514

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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- Definition

Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock.