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Deferred Revenue
3 Months Ended
Mar. 31, 2024
Deferred Revenue Disclosure [Abstract]  
Deferred Revenue

Note 10. Deferred Revenue

Deferred revenue, comprising individually immaterial amounts for extended warranty, enhanced product maintenance and advance payments on non-recurring engineering ("NRE") services contracts, represents contracted revenue that has not yet been recognized. We recognized $709,000 of revenue related to amounts included in deferred revenue as of December 31, 2023 for the three months ended March 31, 2024. We recognized $1.8 million of revenue related to amounts included in deferred revenue as of December 31, 2022 for the three months ended March 31, 2023.

The following table presents the changes in deferred revenue for the indicated periods (in thousands):

 

Three Months Ended March 31,

 

 

2024

 

 

2023

 

Balance at beginning of period

$

1,985

 

 

$

2,599

 

Deferral of revenue

 

633

 

 

 

29

 

Recognition of deferred revenue

 

(709

)

 

 

(1,809

)

Balance at end of period

$

1,909

 

 

$

819