Stock-based Compensation (Details 3)	12 Months Ended
Dec. 31, 2020 USD ($)
Total Unrecognized Compensation Cost	$ 4,605,000
Restricted Stock Units [Member]
Weighted Average Remaining Years in Amortization Period	2 years 9 months 18 days
Unrecognized Compensation Cost, other than options	$ 990,000
Restricted stock units (to be settled in cash) [Member]
Unrecognized Compensation Cost	$ 2,246,000
Weighted Average Remaining Years in Amortization Period	4 years 6 months
Stock Option [Member]
Weighted Average Remaining Years in Amortization Period	1 year 3 months 18 days
Unrecognized Compensation Cost, stock options	$ 682,000
Restricted Stock [Member]
Weighted Average Remaining Years in Amortization Period	1 year 3 months 18 days
Unrecognized Compensation Cost, other than options	$ 687,000

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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