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Fair Value Measurements (Tables)
 9 Months Ended
Nov. 30, 2022
Fair Value Disclosures [Abstract]  
Fair value assets and liabilities measured on recurring basis
The following tables set forth our financial assets as of November 30, 2022 and February 28, 2022 that we measured at fair value on a recurring basis by level within the fair value hierarchy. Assets measured at fair value are classified in their entirety based on the lowest level of input that is significant to their fair value measurement.
  
Fair Value Measurements at November 30, 2022
Using Fair Value Hierarchy
 
Fair Value as of
November 30, 2022
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Valuation
Technique
Assets:
Cash and cash equivalents$208,208 $208,208 $— $— Market
Total$208,208 $208,208 $— $— 
  
Fair Value Measurements at February 28, 2022
Using Fair Value Hierarchy
 
Fair Value as of February 28, 2022
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Valuation
Technique
Assets:
Cash and cash equivalents$167,891 $167,891 $— $— Market
Restricted cash and cash equivalents2,791 2,791 — — Market
Total$170,682 $170,682 $— $— 
Carrying amounts and fair values of financial instruments
The carrying amounts and fair values of our financial instruments at November 30, 2022 and February 28, 2022 were as follows:
 November 30, 2022February 28, 2022
 Carrying  Amount
of Liability		Fair Value
of Liability		Carrying
Amount
of Liability		Fair Value
of Liability
Credit Facilities$20,000 $20,000 $20,000 $20,000 
Unsecured Term Loan155,000 154,824 155,000 152,195 
Export Credit Agency (“ECA”) Financings— — 21,576 21,931 
Term Financings664,091 641,679 666,258 675,667 
Senior Notes3,700,000 3,467,718 3,700,000 3,776,997