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Financial Instruments (Fair Value Using Black-Scholes Option-Pricing Model) (Details)	Mar. 31, 2021 year $ / shares	Dec. 31, 2020 year $ / shares
Share price [Member] | Fixed-price Preemptive Rights [Member]
Derivative [Line Items]
Derivative asset, measurement input | $ / shares	11.88	8.84
Share price [Member] | Cronos Warrant [Member]
Derivative [Line Items]
Derivative asset, measurement input | $ / shares	11.88	8.84
Expected Life [Member] | Fixed-price Preemptive Rights [Member]
Derivative [Line Items]
Derivative asset, measurement input	0.97	1.05
Expected Life [Member] | Cronos Warrant [Member]
Derivative [Line Items]
Derivative asset, measurement input	1.93	2.18
Expected Volatility [Member] | Fixed-price Preemptive Rights [Member]
Derivative [Line Items]
Derivative asset, measurement input	0.8154	0.8068
Expected Volatility [Member] | Cronos Warrant [Member]
Derivative [Line Items]
Derivative asset, measurement input	0.8154	0.8068
Risk Free Interest Rate [Member] | Fixed-price Preemptive Rights [Member]
Derivative [Line Items]
Derivative asset, measurement input	0.0015	0.0013
Risk Free Interest Rate [Member] | Fixed-price Preemptive Rights [Member] | Minimum [Member]
Derivative [Line Items]
Derivative asset, measurement input	0.0009	0.0006
Risk Free Interest Rate [Member] | Fixed-price Preemptive Rights [Member] | Maximum [Member]
Derivative [Line Items]
Derivative asset, measurement input	0.0087	0.0039
Risk Free Interest Rate [Member] | Cronos Warrant [Member]
Derivative [Line Items]
Derivative asset, measurement input	0.0022	0.0021
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	0.25
Weighted Average Expected Term [Member] | Fixed-price Preemptive Rights [Member] | Maximum [Member]
Derivative [Line Items]
Derivative asset, measurement input	4.5	5

X

- 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

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+ References

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