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Accounts Receivable (Tables)
6 Months Ended
Nov. 30, 2021
Accounts Receivable  
Schedule of accounts receivable

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November 30, 

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May 31, 

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2021

    

2021

U.S. Government contracts:

 

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Trade receivables

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$

22.8

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$

24.1

Unbilled receivables

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21.1

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25.2

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43.9

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49.3

All other customers:

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Trade receivables

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131.6

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104.9

Unbilled receivables

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16.6

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12.5

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148.2

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117.4

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$

192.1

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$

166.7