Profits interest incentive plan (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Activity Under the plan

Activity under the Plan is summarized as follows:

Outstanding at December 31, 2019	14,478,949
Cancelled	(170,836	)
Assumption of Plan by Himalaya Parent LLC on July 10, 2020	(14,308,113	)
Outstanding at December 31, 2020	—

Schedule of Nonvested Share Activity

Vesting of Class B units under the Plan is summarized as follows:

Unvested at December 31, 2019	6,158,328
Cancelled	(170,836	)
Vested	(1,310,807	)
Assumption of unvested Class B units by Himalaya Parent LLC on    July 10, 2020	(4,676,685	)
Unvested at December 31, 2020	—

Schedule of Profit Interest Liability Reconciliation

The following table provides a reconciliation of the profits interest liability (in thousands):

Balance at December 31, 2019		8,592
Decrease in fair value of vested liability (Pre-Corporate Reorganization) recognized as decrease to stock-based    compensation expense		(7,601	)
Fair value of vested liability assumed by Himalaya Parent LLC on July 10, 2020 recognized as additional paid-in    capital		(991	)
Balance at December 31, 2020	$	—

Allocation of Equity Based Compensation for Class B units

The allocation of equity-based compensation, including $0.7 million from Himalaya Parent as a capital contribution during 2020, for all Class B units is as follows (in thousands):

	Years ended December 31,
		2020			2019
Research and development		$	(2,993	)	$	(2,997	)
General and administrative			(3,859	)		(3,406	)
Total		$	(6,852	)	$	(6,403	)