| Rollforward of Preferred Stock Embedded Derivative Level 3 Fair Value Measurements | 
 
The following table provides a rollforward of the preferred stock embedded derivative Level 3 fair value measurements for the six months ended September 30, 2020 (Successor):
 
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   | 
   | 
Significant Unobservable Inputs (Level 3)  | 
 
Derivative financial instruments:  | 
   | 
(in thousands)  | 
 
March 31, 2020  | 
   | 
$  | 
286,182  | 
 
  | 
 
Change in fair value  | 
   | 
(15,416  | 
)  | 
 
Preferred stock shares conversion  | 
   | 
(266,846  | 
)  | 
 
Share repurchases  | 
   | 
(3,920  | 
)  | 
 
September 30, 2020  | 
   | 
$  | 
—  | 
 
  | 
 
  
 
 
 | 
| Schedule of fair value of debt | 
 The carrying and fair value of the Company’s debt, excluding unamortized debt issuance costs, are as follows (in thousands): 
 |  
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
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   | 
Successor  | 
 
   | 
Carrying Amount  | 
   | 
Level 1  | 
   | 
Level 2  | 
   | 
Level 3  | 
 
September 30, 2020  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
LIABILITIES  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
PK Air Debt   | 
$  | 
198,217  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
   | 
$  | 
205,627  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
 
Macquarie Debt  | 
145,232  | 
 
  | 
   | 
—  | 
 
  | 
   | 
153,119  | 
 
  | 
   | 
—  | 
 
  | 
 
7.750% Senior Notes  | 
137,499  | 
 
  | 
   | 
—  | 
 
  | 
   | 
136,889  | 
 
  | 
   | 
—  | 
 
  | 
 
Lombard Debt  | 
139,399  | 
 
  | 
   | 
—  | 
 
  | 
   | 
150,211  | 
 
  | 
   | 
—  | 
 
  | 
 
Promissory notes  | 
17,069  | 
 
  | 
   | 
—  | 
 
  | 
   | 
17,069  | 
 
  | 
   | 
—  | 
 
  | 
 
Airnorth Debt  | 
6,624  | 
 
  | 
   | 
—  | 
 
  | 
   | 
6,778  | 
 
  | 
   | 
—  | 
 
  | 
 
Humberside Debt  | 
329  | 
 
  | 
   | 
—  | 
 
  | 
   | 
329  | 
 
  | 
   | 
—  | 
 
  | 
 
   | 
$  | 
644,369  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
   | 
$  | 
670,022  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
 
March 31, 2020  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
LIABILITIES  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
PK Air Debt  | 
$  | 
207,326  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
   | 
$  | 
180,290  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
 
Macquarie Debt  | 
148,165  | 
 
  | 
   | 
—  | 
 
  | 
   | 
138,133  | 
 
  | 
   | 
—  | 
 
  | 
 
Lombard Debt  | 
136,180  | 
 
  | 
   | 
—  | 
 
  | 
   | 
122,165  | 
 
  | 
   | 
—  | 
 
  | 
 
Term Loan  | 
61,500  | 
 
  | 
   | 
—  | 
 
  | 
   | 
56,894  | 
 
  | 
   | 
—  | 
 
  | 
 
Airnorth Debt  | 
7,618  | 
 
  | 
   | 
—  | 
 
  | 
   | 
7,221  | 
 
  | 
   | 
—  | 
 
  | 
 
Humberside Debt  | 
335  | 
 
  | 
   | 
—  | 
 
  | 
   | 
335  | 
 
  | 
   | 
—  | 
 
  | 
 
   | 
$  | 
561,124  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
   | 
$  | 
505,038  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
 
  
 
 
The carrying value is net of unamortized discount as follows (in thousands): 
 |  
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   | 
   | 
Successor  | 
 
   | 
   | 
September 30, 2020  | 
   | 
March 31, 2020  | 
 
PK Air Debt  | 
   | 
$  | 
11,095  | 
 
  | 
   | 
$  | 
12,620  | 
 
  | 
 
Macquarie Debt  | 
   | 
9,196  | 
 
  | 
   | 
11,063  | 
 
  | 
 
7.750% Senior Notes  | 
   | 
6,589  | 
 
  | 
   | 
—  | 
 
  | 
 
Lombard Debt  | 
   | 
23,817  | 
 
  | 
   | 
26,372  | 
 
  | 
 
Airnorth Debt  | 
   | 
339  | 
 
  | 
   | 
605  | 
 
  | 
 
Total unamortized debt discount  | 
   | 
$  | 
51,036  | 
 
  | 
   | 
$  | 
50,660  | 
 
  | 
 
  
 
 
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