Derivative Financial Instruments and Hedging - Derivative Instruments, Gain (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Derivatives designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) recognized in earnings	$ 283	$ 304
Derivatives not designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) recognized in earnings	(256)	(223)
Foreign Currency Contracts [Member] \| Derivatives designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) recognized in earnings	$ 0	$ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Nonoperating Income (Expense)	Nonoperating Income (Expense)
Foreign Currency Contracts [Member] \| Derivatives not designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) recognized in earnings	$ (256)	$ (223)
Foreign Currency Contracts [Member] \| Subscription–self-managed and SaaS [Member] \| Derivatives designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) recognized in earnings	$ 24	$ 20
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of Revenue	Cost of Revenue
Foreign Currency Contracts [Member] \| Research and development [Member] \| Derivatives designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) recognized in earnings	$ 171	$ 187
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Research and Development Expense	Research and Development Expense
Foreign Currency Contracts [Member] \| Sales and marketing [Member] \| Derivatives designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) recognized in earnings	$ 40	$ 46
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling and Marketing Expense	Selling and Marketing Expense
Foreign Currency Contracts [Member] \| General and administrative [Member] \| Derivatives designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses) recognized in earnings	$ 48	$ 51
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	General and Administrative Expense	General and Administrative Expense

JFrog Ltd 10-Q