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)
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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
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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

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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.

+ References

No definition available.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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
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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- 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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 718
-SubTopic 10
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Stock Incentive Plans (Details) - Schedule of exercise prices of outstanding options - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise prices of outstanding options, Lower range (in Dollars per share)		$ 7.95
Exercise prices of outstanding options, Number of options outstanding	20,100	22,839	69,083
Exercise prices of outstanding options, Average remaining contractual life (years)	4 years 266 days
Exercise prices of outstanding options, Number of options exercisable	20,100
$6.10 - $8.34 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise prices of outstanding options, Lower range (in Dollars per share)	$ 6.10
Exercise prices of outstanding options, Upper range (in Dollars per share)	$ 8.34
Exercise prices of outstanding options, Number of options outstanding	18,250
Exercise prices of outstanding options, Average remaining contractual life (years)	5 years 9 months
Exercise prices of outstanding options, Number of options exercisable	18,250
$44.10 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise prices of outstanding options, Upper range (in Dollars per share)	$ 44.10
Exercise prices of outstanding options, Number of options outstanding	1,850
Exercise prices of outstanding options, Average remaining contractual life (years)	3 years 343 days
Exercise prices of outstanding options, Number of options exercisable	1,850