v3.26.1
Summary of Significant Accounting Policies - Contract Revenues (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Summary of Significant Accounting Policies [Line Items]          
Purchased services and other $ 2,912 $ 3,257 $ 6,534 $ 6,119  
Receivables, net 3,834   3,834   $ 7,380
Contract liabilities, net 0   0   4,190
Charter revenues 3,026 47,139 63,269 90,796  
Minimum Crew Availability          
Summary of Significant Accounting Policies [Line Items]          
Revenue from crew availability minimums         2,458
Fixed Daily Revenue          
Summary of Significant Accounting Policies [Line Items]          
Revenue from crew availability minimums         109
On-Demand Charter Service          
Summary of Significant Accounting Policies [Line Items]          
Receivables, net 764   764    
Charter revenues 1,620   8,805    
Contract Revenue          
Summary of Significant Accounting Policies [Line Items]          
Charter revenues 3,021 47,137 63,262 90,792  
Short-Term Contract with Customer          
Summary of Significant Accounting Policies [Line Items]          
Contract liabilities, net         753
Air Wisconsin          
Summary of Significant Accounting Policies [Line Items]          
Deferred revenue current         753
Air Wisconsin | Related Party          
Summary of Significant Accounting Policies [Line Items]          
Receivables, net 0   0   3,395
Non-refundable upfront fee revenues 19 181 753 342  
Deferred revenue current 0   0    
Contract liabilities, net         3,301
Revenue related to one-time assistance payment, estimated monthly support fee and heavy maintenance revenues 73 1,886 2,998 3,805  
Revenue from contract with customer, excluding assessed tax 105   4,301    
Air Wisconsin | Related Party | Minimum Crew Availability          
Summary of Significant Accounting Policies [Line Items]          
Deferred revenue recognition 69 326 2,820 326  
Upfront fee received from minimum crew availability 0 484 362    
Estimated remaining fees to be received from minimum crew availability   2,387   2,387  
Air Wisconsin | Related Party | Fixed Daily Revenue          
Summary of Significant Accounting Policies [Line Items]          
Upfront fee received from minimum crew availability $ 109 0 $ 4,486 0  
Revenue Benchmark | Product Concentration Risk | Contract Revenue          
Summary of Significant Accounting Policies [Line Items]          
Concentration risk 53.50%   13.90%    
American Capacity Purchase Agreement          
Summary of Significant Accounting Policies [Line Items]          
Revenue from contract with customer, excluding assessed tax $ 636 181 $ 4,190 342  
American Capacity Purchase Agreement | Heavy Maintenance Reimbursements          
Summary of Significant Accounting Policies [Line Items]          
Contract liabilities, net         $ 2,689
American Capacity Purchase Agreement | Air Wisconsin          
Summary of Significant Accounting Policies [Line Items]          
Purchased services and other 428 23,266 17,946 43,498  
American Capacity Purchase Agreement | Air Wisconsin | Related Party          
Summary of Significant Accounting Policies [Line Items]          
Purchased services and other     3,998    
Deferred revenue recognition 591 21,526 16,029 42,117  
Payment received 0   9,496    
American Capacity Purchase Agreement | American Airlines | Air Wisconsin          
Summary of Significant Accounting Policies [Line Items]          
Rebates payable $ 0 $ 606 $ 4,500 $ 654  
American Capacity Purchase Agreement | Revenue Benchmark | Customer Concentration Risk          
Summary of Significant Accounting Policies [Line Items]          
Concentration risk 46.30% 100.00% 86.10% 100.00%