Financial Instruments (Fair Value Using Black-Scholes Option-Pricing Model) (Details)	Mar. 31, 2020 year	Dec. 31, 2019 year
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