Revenue - Summary of deferred contract costs (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Capitalized Contract Cost [Line Items]
Balance at beginning of period	$ 36,948	$ 26,554	$ 37,186	$ 26,361
Costs amortized	(4,407)	(3,612)	(8,628)	(7,317)
Additional amounts deferred	3,349	5,725	7,332	9,623
Balance at end of period	35,890	28,667	35,890	28,667
Classified as:
Current	16,021	12,681	16,021	12,681	$ 15,069
Non-current	19,869	15,986	19,869	15,986	22,117
Total deferred contract costs	$ 35,890	$ 28,667	$ 35,890	$ 28,667	$ 37,186