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COMMITMENTS (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Commitments And Contingencies [Line Items] |  |  |
Subcontracting commitment amount | $ 9,800,000 |  |
OCS [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Royalty expense included in cost of revenue | $ 1,390,000 | $ 1,619,000 | $ 1,384,000
Minimum [Member] | OCS [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Royalties based on sale of products developed from funded projects, percentage | 3.00% |  |
Maximum [Member] | OCS [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Royalties based on sale of products developed from funded projects, percentage | 6.00% |  |
Accrued royalties | $ 40,800,000 | $ 41,900,000 |
Percentage of Royalties to Grant Received | 100.00% | 100.00% | 100.00%
Maximum [Member] | Products Manufactured Outside Of Israel [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Percentage of Royalties to Grant Received | 300.00% | 300.00% | 300.00%

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