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Common Shares, Option Amendment (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2018 USD ($) item	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Common shares
Current liabilities		$ 952		$ 952		$ 2,058
Stock-based compensation expense		$ 271	$ 253	855	$ 680
Stock Option Agreement 2013 Amendment [Member]
Common shares
Number of executives and directors | item	7
Current liabilities	$ 72
Stock-based compensation expense				$ 0

X

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
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- Definition

Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.

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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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The number of executives and directors affected by the option amendment.

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