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Deferred Revenue of Membership Upgrade Sales and Deferred Commission Expense
 12 Months Ended
Dec. 31, 2024
Revenue from Contract with Customer [Abstract]  
Deferred Revenue of Membership Upgrade Sales and Deferred Commission Expense Deferred Revenue of Membership Upgrade Sales and Deferred Commission Expense
The components of the change in deferred revenue entry of membership subscriptions and deferred commission expense were as follows:
As of December 31,
(amounts in thousands)
20242023
Deferred revenue - upfront payments from membership upgrade sales, beginning of year$206,625 $185,660 
Membership upgrade sales27,529 35,684 
Revenue recognized from membership upgrade sales upfront payments(16,433)(14,719)
Net increase in deferred revenue - upfront payments from membership upgrade sales11,096 20,965 
Deferred revenue - upfront payments from membership upgrade sales, end of year (1)
$217,721 $206,625 
Deferred commission expense, beginning of year$53,641 $50,441 
Deferred commission expense7,452 7,411 
Commission expense recognized(4,577)(4,211)
Net increase in deferred commission expense2,875 3,200 
Deferred commission expense, end of year$56,516 $53,641 
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(1)Included in Deferred membership revenue on the Consolidated Balance Sheet.