Revenue

9 Months Ended

Sep. 30, 2022

Revenue from Contract with Customer [Abstract]

Revenue

(4) Revenue

Revenues are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2022		2021		2022
	(in thousands)
Travel	$	39,509	$	54,508	$	95,799	$	152,417
Subscription		25,178		38,587		70,305		106,315
Other		137		37		286		171
Total	$	64,824	$	93,132	$	166,390	$	258,903

The Company recognized assets and liabilities related to contracts with customers as follows:

	December 31,		September 30,
	2021		2022
	(in thousands)
Assets:
Accounts receivable, net	$	2,389	$	2,460
Liabilities:
Deferred revenue, current and noncurrent	$	191,263	$	171,728