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Financial Instruments (Fair Value Using Black-Scholes Option-Pricing Model) (Details) | Mar. 31, 2020 year | Dec. 31, 2019 year
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Share price [Member] | Fixed-price Preemptive Rights [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 7.99 | 9.97
Share price [Member] | Cronos Warrant [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 7.99 | 9.97
Expected Life [Member] | Fixed-price Preemptive Rights [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 1.60 | 1.67
Expected Life [Member] | Cronos Warrant [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 2.93 | 3.18
Expected Volatility [Member] | Fixed-price Preemptive Rights [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 0.7997 | 0.8161
Expected Volatility [Member] | Cronos Warrant [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 0.7997 | 0.8161
Risk Free Interest Rate [Member] | Fixed-price Preemptive Rights [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 0.0038 | 0.0171
Risk Free Interest Rate [Member] | Fixed-price Preemptive Rights [Member] | Minimum [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 0.0021 | 0.0166
Risk Free Interest Rate [Member] | Fixed-price Preemptive Rights [Member] | Maximum [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 0.0062 | 0.0174
Risk Free Interest Rate [Member] | Cronos Warrant [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 0.0049 | 0.0169
Expected Dividend Yield [Member] | Fixed-price Preemptive Rights [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 0 | 0
Expected Dividend Yield [Member] | Cronos Warrant [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 0 | 0
Weighted Average Expected Term [Member] | Fixed-price Preemptive Rights [Member] | Minimum [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 0.25 |
Weighted Average Expected Term [Member] | Fixed-price Preemptive Rights [Member] | Maximum [Member] |  |
Derivative [Line Items] |  |
Derivative asset, measurement input | 6 |

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- Definition Value of input used to measure derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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