Stock Options and Award Programs (Details 1) - shares	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Stock options granted	150,000	3,515,000
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Expected volatility	65.20%	68.20%
Risk-free interest rate	1.00%	1.70%
Forfeiture rate	4.43%	4.20%
Expected life	2 years	3 years
Maximum [Member]
Expected volatility	6.95%	72.50%
Risk-free interest rate	2.73%	2.10%
Forfeiture rate	10.30%	6.80%
Expected life	5 years	7 years
Employee Stock Option [Member]
Stock options granted	150,000	3,515,000
Expected dividend yield	0.00%	0.00%
Expected life	5 years	5 years
Employee Stock Option [Member] \| Minimum [Member]
Expected volatility	65.20%	68.20%
Risk-free interest rate	2.72%	1.80%
Forfeiture rate	4.43%	4.60%
Employee Stock Option [Member] \| Maximum [Member]
Expected volatility	66.70%	74.20%
Risk-free interest rate	2.73%	2.10%
Forfeiture rate	4.81%	6.80%
Board of Directors Option [Member]
Stock options granted		350,000
Expected dividend yield		0.00%
Expected life		7 years
Board of Directors Option [Member] \| Minimum [Member]
Expected volatility		69.60%
Risk-free interest rate		1.70%
Forfeiture rate		4.20%
Board of Directors Option [Member] \| Maximum [Member]
Expected volatility		70.10%
Risk-free interest rate		2.00%
Forfeiture rate		5.90%
Non Employee Stock Option [Member]
Stock options granted	50,000	75,000
Expected dividend yield	0.00%	0.00%
Expected volatility	69.50%	72.50%
Risk-free interest rate	1.00%	1.70%
Forfeiture rate	10.30%	6.60%
Expected life	3 years	3 years

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

+ Details

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

+ Details

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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- Definition

The estimated measure of the percentage by which a share price is expected to forfeiture during the period.

+ References

No definition available.

+ Details

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