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Impact of the COVID-19 Pandemic - Narrative (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
Aircraft
Jun. 30, 2021
USD ($)
engine
Aircraft
Apr. 23, 2021
USD ($)
shares
Dec. 24, 2020
$ / shares
Unusual or Infrequent Item, or Both [Line Items]            
Total special charges $ 142 $ 1,738 $ 100 $ 1,700    
Other Aircraft Related Costs     $ 100 $ 1,200    
Number of Aircraft Retired | Aircraft     1      
Number of Engines Retired | engine       3    
Other Expenses       $ 500    
Airbus A320 Aircraft Series            
Unusual or Infrequent Item, or Both [Line Items]            
Number of Aircraft Retired | Aircraft       2    
Payroll Support Program Grant Extension            
Unusual or Infrequent Item, or Both [Line Items]            
Additional Proceeds Received from Payroll Support Program         $ 13,800  
Debt Instrument, Face Amount         $ 1,700  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares         924  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares           $ 179.23
Payroll Support Program 3            
Unusual or Infrequent Item, or Both [Line Items]            
Total Proceeds from Payroll Support Program Grant $ 98,400   $ 98,400