ForgeRock, Inc. Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Valuation allowance increase	$ 25,900	$ 18,400
Uncertain tax positions	2,043	5,786	$ 2,811	$ 2,184
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	121,200
Federal \| Research Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
R&D credits	6,600
Uncertain tax positions	1,800	4,200
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	65,900
State \| Research Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
R&D credits	900
Uncertain tax positions	200	1,500
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	160,000
Uncertain tax positions	$ 100	$ 100