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Stock-Based Compensation (Details 2)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Offsetting Assets [Line Items]
Expected stock price volatility	49.80%	49.80%	47.80%
Expected life of options (years)	4 years 7 months 13 days	5 years	5 years
Expected dividend yield	0.00%	0.00%	0.00%
Risk free interest rate	2.85%	2.80%	1.90%
Stock options [Member]
Offsetting Assets [Line Items]
Expected stock price volatility	49.80%	49.80%
Expected life of options (years)	5 years 9 months 18 days	5 years
Expected dividend yield	0.00%	0.00%
Risk free interest rate	2.80%	2.90%
Stock- option liability [Member]
Offsetting Assets [Line Items]
Expected stock price volatility	49.80%
Expected life of options (years)	5 years
Expected dividend yield	0.00%
Risk free interest rate	2.50%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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.

+ 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)(iii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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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

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)(ii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
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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.

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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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