| Document and Entity Information | 6 Months Ended |
| Jun. 30, 2024 | |
| Cover Abstract | |
| Entity Registrant Name | ALLOT LTD. |
| Entity Central Index Key | 0001365767 |
| Document Type | 6-K |
| Document Period End Date | Jun. 30, 2024 |
| Amendment Flag | false |
| Document Fiscal Year Focus | 2024 |
| Current Fiscal Year End Date | --12-31 |
| Document Fiscal Period Focus | Q2 |
| Entity Address, Address Line One | 22 Hanagar Street |
| Entity Address, Address Line Two | Neve Ne'eman Industrial Zone B |
| Entity Address, City or Town | Hod-Hasharon |
| Entity Address, Postal Zip Code | 45240 |
| Entity Address, Country | IL |
| CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | ||
| Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | |
| Income Statement [Abstract] | ||||
| Revenues | $ 22,164 | $ 25,047 | $ 44,054 | $ 46,173 |
| Cost of revenues | 6,989 | 7,707 | 13,781 | 15,358 |
| Gross profit | 15,175 | 17,340 | 30,273 | 30,815 |
| Operating expenses: | ||||
| Research and development costs, net | 7,326 | 10,752 | 14,475 | 21,246 |
| Sales and marketing | 7,911 | 10,522 | 15,701 | 21,409 |
| General and administrative | 3,304 | 17,558 | 6,206 | 21,518 |
| Total operating expenses | 18,541 | 38,832 | 36,382 | 64,173 |
| Operating loss | (3,366) | (21,492) | (6,109) | (33,358) |
| Financial and other income, net | 489 | 985 | 1,029 | 1,779 |
| Loss before income tax expenses | (2,877) | (20,507) | (5,080) | (31,579) |
| Tax expenses | 479 | 225 | 786 | 515 |
| Net Loss | $ (3,356) | $ (20,732) | $ (5,866) | $ (32,094) |
| Basic net loss per share | $ (0.09) | $ (0.55) | $ (0.16) | $ (0.85) |
| Diluted net loss per share | $ (0.09) | $ (0.55) | $ (0.16) | $ (0.85) |
| Weighted average number of shares used in computing basic net loss per share (shares) | 38,712,407 | 37,743,328 | 38,562,065 | 37,583,412 |
| Weighted average number of shares used in computing diluted net loss per share (shares) | 38,712,407 | 37,743,328 | 38,562,065 | 37,583,412 |
| CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023 |
| CURRENT ASSETS: | ||
| Cash and cash equivalents | $ 15,883 | $ 14,192 |
| Short-term bank deposits | 3,800 | 10,000 |
| Restricted deposits | 1,183 | 1,728 |
| Available-for-sale marketable securities | 32,313 | 28,853 |
| Trade receivables, net (net of allowance for credit losses of $25,341 and $25,253 on June 30, 2024 and December 31, 2023, respectively) | 17,808 | 14,828 |
| Other receivables and prepaid expenses | 5,933 | 8,437 |
| Inventories | 9,606 | 11,874 |
| Total current assets | 86,526 | 89,912 |
| LONG-TERM ASSETS: | ||
| Severance pay fund | 409 | 395 |
| Restricted deposit | 0 | 158 |
| Operating lease right-of-use assets | 1,883 | 3,057 |
| Other assets | 1,025 | 704 |
| Property and equipment, net | 10,203 | 11,189 |
| Intangible assets, net | 610 | 915 |
| Goodwill | 31,833 | 31,833 |
| Total non-current assets | 45,963 | 48,251 |
| Total assets | 132,489 | 138,163 |
| CURRENT LIABILITIES: | ||
| Trade payables | 985 | 969 |
| Deferred revenues | 15,565 | 14,892 |
| Short-term operating lease liabilities | 1,405 | 1,453 |
| Other payables and accrued expenses | 18,128 | 22,094 |
| Total current liabilities | 36,083 | 39,408 |
| LONG-TERM LIABILITIES: | ||
| Deferred revenues | 8,729 | 7,437 |
| Long-term operating lease liabilities | 132 | 702 |
| Accrued severance pay | 929 | 1,080 |
| Convertible debt | 39,873 | 39,773 |
| Total long-term liabilities | 49,663 | 48,992 |
| SHAREHOLDERS' EQUITY | 46,743 | 49,763 |
| Total liabilities and shareholders' equity | $ 132,489 | $ 138,163 |
| CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023 |
| Statement of Financial Position [Abstract] | ||
| Allowance for credit losses | $ 25,341 | $ 25,253 |
| CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | ||
| Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | |
| Cash flows from operating activities: | ||||
| Net Loss | $ (3,356) | $ (20,732) | $ (5,866) | $ (32,094) |
| Adjustments to reconcile net income to net cash provided by (used in) operating activities: | ||||
| Depreciation | 1,156 | 1,327 | 2,371 | 2,647 |
| Stock-based compensation | 2,187 | 2,425 | 3,547 | 5,893 |
| Amortization of intangible assets | 153 | 277 | 305 | 553 |
| Increase (Decrease) in accrued severance pay, net | (107) | 13 | (165) | 73 |
| Decrease in other assets, other receivables and prepaid expenses | 955 | 468 | 1,672 | 967 |
| Increase in accrued interest and amortization of premium/discount on marketable securities | (405) | (166) | (777) | (147) |
| Decrease in operating leases liability | (159) | (438) | (618) | (1,543) |
| Decrease in operating lease right-of-use asset | 622 | 728 | 1,174 | 1,450 |
| Decrease (Increase) in trade receivables | (2,789) | 10,403 | (2,980) | 14,889 |
| Decrease (Increase) in inventories | 2,101 | (1,645) | 2,268 | (5,098) |
| Increase (Decrease) in trade payables | 278 | (2,941) | 16 | (2,202) |
| Decrease in employees and payroll accruals | (649) | (1,042) | (4,135) | (2,494) |
| Increase (Decrease) in deferred revenues | 595 | 870 | 1,965 | (1,299) |
| Increase (Decrease) in other payables, accrued expenses and other long term liabilities | 542 | (923) | (12) | (1,824) |
| Amortization of issuance costs of Convertible debt | 50 | 49 | 100 | 98 |
| Net cash provided by (used in) operating activities | 1,174 | (11,327) | (1,135) | (20,131) |
| Cash flows from investing activities: | ||||
| Decrease (Increase) in restricted deposit | (1) | (224) | 703 | (224) |
| Investment in short-term bank deposits | (3,800) | 0 | (3,800) | (15,900) |
| Withdrawal of short-term bank deposits | 0 | 21,700 | 10,000 | 54,600 |
| Purchase of property and equipment | (957) | (290) | (1,386) | (560) |
| Investment in marketable securities | (10,477) | (9,584) | (34,752) | (18,567) |
| Proceeds from redemption or sale of marketable securities | 7,225 | 590 | 32,060 | 3,960 |
| Net cash provided by (used in) investing activities | (8,010) | 12,192 | 2,825 | 23,309 |
| Cash flows from financing activities: | ||||
| Proceeds from exercise of stock options | 1 | 0 | 1 | 0 |
| Net cash provided by financing activities | 1 | 0 | 1 | 0 |
| Increase (Decrease) in cash and cash equivalents | (6,835) | 865 | 1,691 | 3,178 |
| Cash and cash equivalents at the beginning of the period | 22,718 | 14,608 | 14,192 | 12,295 |
| Cash and cash equivalents at the end of the period | $ 15,883 | $ 15,473 | $ 15,883 | $ 15,473 |
