Quarterly report pursuant to Section 13 or 15(d)

Revenue

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Revenue
 3 Months Ended
Mar. 31, 2024
Revenue from Contract with Customer [Abstract]  
Revenue Revenue
Disaggregation of Revenues
Our revenues are derived from the delivery of products to our customers and from services performed for commercial and government customers.

A summary of revenues by customer for each of our operating segments for the three months ended March 31, 2024 and 2023 is as follows (in thousands):
Three months ended March 31, 2024
Aviation Fleet Total
Commercial $ 157,984  $ 44,599  $ 202,583 
Other government 4,399  34,557  38,956 
     Total $ 162,383  $ 79,156  $ 241,539 

Three months ended March 31, 2023
Aviation Fleet Total
Commercial $ 112,060  $ 32,544  $ 144,604 
Other government 1,175  42,808  43,983 
     Total $ 113,235  $ 75,352  $ 188,587 

A summary of revenues by type for each of our operating segments for the three months ended March 31, 2024 and 2023 is as follows (in thousands):
Three months ended March 31, 2024
Aviation Fleet Total
Repair $ 50,674  $ —  $ 50,674 
Distribution 111,709  79,156  190,865 
     Total $ 162,383  $ 79,156  $ 241,539 

Three months ended March 31, 2023
Aviation Fleet Total
Repair $ 32,054  $ —  $ 32,054 
Distribution 81,181  75,352  156,533 
     Total $ 113,235  $ 75,352  $ 188,587 


Contract Balances

Contract balances were as follows (in thousands):
March 31, December 31,
Financial Statement Classification 2024 2023
Billed and billable receivables
Receivables, net
 $ 145,427  $ 127,958 
Contract assets - unbilled receivables
Contract assets
 $ 10,800  $ 8,049 
Contract liabilities Accrued expenses and other current liabilities $ 3,196  $ 2,785 
For the three months ended March 31, 2024 and 2023, we recognized revenue that was previously included in the beginning balance of contract liabilities of $1.4 million and $0.7 million, respectively.