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CONVERTIBLE NOTES (Schedule Of Debt Interest Expenses) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Loss (gain) on extinguishment |  | $ 1,325 | $ (14,063)
Change in fair value of convertible note embedded derivative |  | (38,061) | (6,473)
Notes 2021 [Member] |  |  |
Contractual interest expense | $ 4,359 | 4,434 | 313
Debt discount amortization | 2,587 | 2,309 | 147
Loss (gain) on extinguishment |  |  | (14,063)
Change in fair value of convertible note embedded derivative |  | 38,061 | 6,473
Interest payment in connection with conversions | 234 | 3,918 |
Income in connection with conversions | 245 | (1,643) |
Total | $ 7,425 | 47,079 | $ (7,130)
Notes 2022 [Member] |  |  |
Contractual interest expense |  | 55 |
Debt discount amortization |  | (46) |
Loss (gain) on extinguishment |  | 1,325 |
Total |  | $ 1,334 |

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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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