Kaleyra, Inc. Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Net Realized and Unrealized (Gains) and Losses Related to Level 3 Liabilities (Details) - Level 3 - Preference Shares $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized Gains (Losses) Included in Income	$ (2,486)
Research and Development
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized Gains (Losses) Included in Income	(941)
Sales and Marketing
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized Gains (Losses) Included in Income	(372)
General and Administrative Expenses
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized Gains (Losses) Included in Income	(756)
Financial Income (Expense), Net
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized Gains (Losses) Included in Income	$ (417)