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OTHER LONG-TERM DEBT (Schedule of Repayment of Loan) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Total outstanding principal amounts of loans [Member] |  |
Repayment schedule (carrying amount): |  |
2018 |  | $ 49,629
2019 |  | 44,176
2020 |  | 33,006
2021 | 22,248 | 11,428
2022 | 22,248 |
2023 and on | 55,622 |
Total | $ 100,118 | $ 138,239
JPY [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 1.95% | Tibor + 1.65%-2.00%
Repayment schedule (carrying amount): |  |
2018 |  | $ 43,915
2019 |  | 32,747
2020 |  | 21,577
2021 | 22,248 |
2022 | 22,248 |
2023 and on | 55,622 |
Total | $ 100,118 | $ 98,239
U.S. Dollars [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate |  | Libor + 2.00%
Repayment schedule (carrying amount): |  |
2018 |  | $ 5,714
2019 |  | 11,429
2020 |  | 11,429
2021 |  | 11,428
Total |  | $ 40,000

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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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