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COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Oct. 31, 2019 | Jun. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Oct. 31, 2017
Guarantor Obligations [Line Items] |  |  |  |  |  |
Outstanding inventory purchase commitments |  |  | $ 24,939 | $ 18,418 |  |
Inventory purchase commitments, sole or limited suppliers |  |  | 12,718 | 6,939 |  |
Amount of claim, including interest, penalties and legal fees |  |  | 8,742 |  |  |
Principal Amount of Claim |  |  | 1,002 |  |  | $ 6,300
Amount of reduction of costs in cost of sales |  |  | 3,260 |  |  |
Aggregate amount of guarantees |  |  | 106,037 |  |  |
Restricted cash collateral |  |  | 27,191 |  |  |
Settlement amount of arbitration |  | $ 400 |  |  |  |
Loss for firm non-cancelable and unconditional purchase commitments |  |  | 1,016 | 1,448 | $ 0 |
Subsidiary [Member] |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |
Arbitration award amount |  | $ 13,500 |  |  |  |
Period of claim collection | 5 years |  |  |  |  |
Period of occurrence | 2015-2019 |  |  |  |  |
Peru [Member] |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |
Aggregate amount of guarantees |  |  | 102,687 |  |  |
Aggregate amount |  |  |  | 154,000 |  |
Spacenet Inc. [Member] |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |
Service expenses |  |  | $ 9,845 | 12,771 | $ 11,184 |
OCS [Member] |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |
Percentage of amount funded for research and development projects |  |  | 100.00% |  |  |
Accrued royalties |  |  | $ 1,428 |  |  |
Royalties paid |  |  | $ 68 | $ 20 |  |
OCS [Member] | Minimum [Member] |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |
Royalty fee (as a percent) |  |  | 3.00% |  |  |
OCS [Member] | Maximum [Member] |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |
Royalty fee (as a percent) |  |  | 5.00% |  |  |
BIRD [Member] |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |
Royalty fee (as a percent) |  |  | 5.00% |  |  |
Percentage of amount funded for research and development projects |  |  | 150.00% |  |  |
Accrued royalties |  |  | $ 303 |  |  |

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