The following table summarizes the RSUs outstanding at June 30, 2021 (Details) - Restricted Stock Units (RSUs) [Member]	6 Months Ended
Jun. 30, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested RSUs, beginning balance \| shares	2,136,893
Weighted average grant date fair value of non-vested RSUs, beginning balance \| $ / shares	$ 3.64
RSUs vested during the period \| shares	(66,462)
Weighted average grant date fair value of RSUs vested during the period \| $ / shares	$ 3.04
RSUs forfeited during the period \| shares	(36,171)
Weighted average grant date fair value of RSUs forfeited during the period \| $ / shares	$ 3.09
Non-vested RSUs, ending balance \| shares	2,034,260
Weighted average grant date fair value of non-vested RSUs, ending balance \| $ / shares	$ 3.66

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

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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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 (c)(1)(ii)
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-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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