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SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2020
Accounting Policies [Abstract] |
Schedule of Estimated Useful Lives at an Annual Rate | Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is calculated by the straight-line method over the estimated useful lives of the assets at the following annual rates:
|  | %
Lab equipment |  | 16 - 25
Computers and peripheral equipment |  | 33
Office furniture |  | 6
Equipment at customer site |  | 16
Leasehold improvements |  | Over the shorter of the term of the lease or the useful life of the asset
Schedule of Allowance of Credit Losses | The follow table displays a rollforward of the total allowance for credit losses for the years ended December 31, 2020, 2019, and 2018.
|  | 2020 |  |  | 2019 |  |  | 2018 |
Total allowance for credit losses – January 1 |  |  | 1,867 |  |  |  | 1,415 |  |  |  | 1,292 |
Current-period provision for expected credit losses |  |  | 1,894 |  |  |  | 866 |  |  |  | 504 |
Write-offs |  |  | (934 | ) |  |  | (3 | ) |  |  | (11 | )
Recoveries collected |  |  | (518 | ) |  |  | (411 | ) |  |  | (370 | )
Total allowance for credit losses – December 31 |  |  | 2,309 |  |  |  | 1,867 |  |  |  | 1,415 |
Schedule of Stock-Based Compensation Expense | The following table sets forth the total stock-based compensation expense resulting from stock options, restricted share units and Phantoms granted to employees included in the consolidated statements of comprehensive loss, for the years ended December 31, 2020, 2019 and 2018:
|  | Year ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Cost of revenues |  | $ | 355 |  |  | $ | 264 |  |  | $ | 316 |
Research and development |  |  | 1,368 |  |  |  | 847 |  |  |  | 678 |
Sales and marketing |  |  | 2,145 |  |  |  | 1,257 |  |  |  | 928 |
General and administrative |  |  | 1,330 |  |  |  | 1,052 |  |  |  | 940 |
Total stock-based compensation expense |  | $ | 5,198 |  |  | $ | 3,420 |  |  | $ | 2,862 |
Schedule of Stock-Based Compensation Assumptions | The Company selected the binomial option pricing model as the most appropriate fair value method for its stock options awards with the following assumptions for the years ended December 31, 2018:
|  | Year ended December 31, |
|  | 2018 |
Suboptimal exercise multiple |  |  | 2.9-3.5 |
Risk free interest rate |  |  | 2.09%-3.05% |
Volatility |  |  | 26%-47% |
Dividend yield |  |  | 0% |
Schedule of Accumulated Other Comprehensive Income | The following table shows the components and the effects on net loss of amounts reclassified from accumulated other comprehensive loss as of December 31, 2020:
|  | Year ended December 31, 2020 |
|  | Unrealized gain (losses) on marketable securities |  |  | Unrealized gains (losses) on cash flow hedges |  |  | Total |
Balance as of December 31, 2019 |  | $ | 321 |  |  | $ | (846 | ) |  | $ | (525 | )
Changes in other comprehensive income before reclassifications |  |  | 191 |  |  |  | 723 |  |  |  | 914 |
Amounts reclassified from accumulated other comprehensive loss to: |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues |  |  | - |  |  |  | (5 | ) |  |  | (5 | )
Operating expenses |  |  | - |  |  |  | (198 | ) |  |  | (198 | )
Financial income, net |  |  | (40 | ) |  |  | - |  |  |  | (40 | )
Net current-period other comprehensive income |  |  | 151 |  |  |  | 520 |  |  |  | 671 |
Balance as of December 31, 2020 |  | $ | 472 |  |  | $ | (326 | ) |  | $ | 146 |
There was no income tax expense or benefit allocated to other comprehensive income, including reclassification adjustments for the year ended December 31, 2020.

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