Stock Based Compensation - Schedule of Share-based Compensation, Stock Options, Activity (Details) - Stock Options [Member]	6 Months Ended
Jun. 30, 2020 $ / shares shares
Number of Options, Outstanding at beginning of period	7,741,340
Number of Options, Granted
Number of Options, Forfeited or expired	(3,570)
Number of Options, Outstanding at end of period	7,737,770
Number of Options, Exercisable at end of period	7,690,104
Weighted-Average Exercise Price Options, Outstanding at beginning of period \| $ / shares	$ 3.32
Weighted-Average Exercise Price Options, Granted \| $ / shares
Weighted-Average Exercise Price Options, Forfeited or expired \| $ / shares	32.76
Weighted-Average Exercise Price Options, Outstanding at end of period \| $ / shares	3.31
Weighted-Average Exercise Price Options, Exercisable at end of period \| $ / shares	$ 3.32
Employees [Member]
Number of Options, Outstanding at beginning of period	7,126,340
Number of Options, Granted
Number of Options, Forfeited or expired	(3,570)
Number of Options, Outstanding at end of period	7,122,770
Number of Options, Exercisable at end of period	7,075,104
Non Employees [Member]
Number of Options, Outstanding at beginning of period	615,000
Number of Options, Granted
Number of Options, Forfeited or expired
Number of Options, Outstanding at end of period	615,000
Number of Options, Exercisable at end of period	615,000

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.

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)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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.

+ 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 (c)(1)(iv)(3)-(4)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 718
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Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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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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No definition available.

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