The total fair value of shares issued during the period under a deferred compensation arrangement.

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Amount of noncash expense for share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stock-based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended			6 Months Ended
	Mar. 01, 2021	Feb. 28, 2021	Jul. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jul. 07, 2021
Additional General Disclosures [Abstract]
Stock-based compensation expense				$ 581		$ 410	$ 1,243	$ 840
Compensation Cost Not yet Recognized [Abstract]
Unrecognized compensation expense				$ 2,641			$ 2,641
Weighted average period of recognition							1 year 3 months 10 days
Accelerated cost		$ 173
Stock Options [Member]
Number of Stock Options [Abstract]
Options outstanding (in shares)				6,925,478			6,925,478
Weighted average exercise price, outstanding (in dollars per share)				$ 1.83			$ 1.83
Vested (in shares)				4,510,555			4,510,555
Exercisable (in shares)				4,510,555			4,510,555
Stock Options [Member] \| Subsequent Event [Member]
Number of Stock Options [Abstract]
Number of shares available for issuance (in shares)									2,741,774
Stock Options [Member] \| Incoming Chief Executive Officer [Member]
Compensation Cost Not yet Recognized [Abstract]
Granted (in shares)	1,632,590
Strike price (in dollars per share)	$ 1.73
Award vesting period							3 years
Expiry period of option							10 years
Aggregate fair value of shares issued	$ 2,103
Stock Options [Member] \| Incoming Chief Executive Officer [Member] \| Vesting on First Anniversary of Date of Grant [Member]
Compensation Cost Not yet Recognized [Abstract]
Granted (in shares)	544,198
Stock Options [Member] \| Incoming Chief Executive Officer [Member] \| Vesting Every Three Months Thereafter [Member]
Compensation Cost Not yet Recognized [Abstract]
Granted (in shares)	136,049
Stock Options [Member] \| 2016 Omnibus Incentive Plan [Member] \| Subsequent Event [Member]
Number of Stock Options [Abstract]
Number of shares available for issuance (in shares)									2,700,000
Restricted Stock Units [Member]
Restricted Stock Units [Abstract]
Restricted stock units vested and unissued (in shares)					71,934
Restricted Stock Units [Member] \| Board of Directors [Member] \| Vested Immediately [Member] \| Subsequent Event [Member]
Compensation Cost Not yet Recognized [Abstract]
Number of shares issued (in shares)			128,373
Aggregate fair value of shares issued			$ 182
Restricted Stock Units [Member] \| Board of Directors [Member] \| Vesting from June 1, 2021 through June 2022 [Member] \| Subsequent Event [Member]
Compensation Cost Not yet Recognized [Abstract]
Number of shares issued (in shares)			149,281
Aggregate fair value of shares issued			$ 212
Restricted Stock Units [Member] \| New Member of the Board of Directors [Member] \| Vesting from April 2021 to April 2022 [Member] \| Subsequent Event [Member]
Compensation Cost Not yet Recognized [Abstract]
Number of shares issued (in shares)			20,000
Aggregate fair value of shares issued			$ 28