Revenue

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Revenue

(4) Revenue

Revenues are as follows:

	Three Months Ended March 31,
	2021		2022
	(in thousands)
Travel	$	27,787	$	49,773
Subscription		21,408		32,166
Other		85		134
Total	$	49,280	$	82,073

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

	December 31,		March 31,
	2021		2022
	(in thousands)
Assets:
Accounts receivable, net	$	2,389	$	1,770
Liabilities:
Deferred revenue, current and long term	$	191,263	$	190,162