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Equity - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Equity [Abstract]
Number of Options (in shares), Outstanding at beginning of period	1,364,490
Number of Options (in shares), Granted	65,000	175,000
Number of Options (in shares), Exercised	(96,250)
Number of Options (in shares), Forfeited or expired	(524,430)
Number of Options (in shares), Outstanding at end of period	808,810
Number of Options (in shares), Exercisable at end of period	585,726
Weighted Average Exercise Price Per Share, Outstanding at beginning of period	$ 1.87
Weighted Average Exercise Price Per Share, Granted	0.37
Weighted Average Exercise Price Per Share, Exercised	0.19
Weighted Average Exercise Price Per Share, Forfeited or expired	2.43
Weighted Average Exercise Price Per Share, Outstanding at end of period	1.59
Weighted Average Exercise Price Per Share, Exercisable at end of period	$ 2.06
Weighted Average Remaining Contractual Life, Outstanding at beginning of period	1 year 9 months 22 days
Weighted Average Remaining Contractual Life, Outstanding at end of period	3 years 3 months 19 days
Weighted Average Remaining Contractual Life, Exercisable at end of period	2 years 2 months 12 days
Aggregate Intrinsic Value, Outstanding at beginning of period	$ 46
Aggregate Intrinsic Value, Outstanding at end of period
Aggregate Intrinsic Value, Exercisable at end of period

X

- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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