Receivables
 9 Months Ended
Sep. 30, 2022
Receivables [Abstract]  
Receivables
RECEIVABLES
Receivables were comprised of the following:
(In thousands)September 30, 2022December 31, 2021
Billed receivables$190,358 $104,074 
Unbilled receivables (contract assets)490,101 239,979 
Other 10,484 4,552 
Total receivables$690,943 $348,605 
As of September 30, 2022 and December 31, 2021, substantially all billed receivables are due from the U.S. government, either directly as prime contractor to the U.S. government or as subcontractor to another prime contractor to the U.S. government. Because the Company's billed receivables are with the U.S. government, the Company does not believe it has material credit risk exposure.
Unbilled receivables are contract assets that represent revenue recognized on long-term contracts in excess of amounts billed as of the balance sheet date.
We expect to bill customers for the majority of the September 30, 2022 contract assets during 2022. Changes in the balance of receivables are primarily due to the timing differences between our performance and customers' payments.