v3.22.4
Deferred revenue
 12 Months Ended
Dec. 31, 2022
Subclassifications of assets, liabilities and equities [abstract]  
Deferred revenue Deferred revenue:
Deferred revenue (i.e. contract liabilities) represents cash received from customers in excess of revenue recognized on uncompleted contracts.
Deferred revenueDecember 31, 2022December 31, 2021
Beginning Balance$12,109 $9,888 
Additions to deferred revenue21,650 23,618 
Revenue recognized during the year(25,729)(21,397)
Ending Balance$8,030 $12,109