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Stock Based Compensation (Details 1)	12 Months Ended
	Dec. 31, 2018 shares
Exercise Price $25.65 [Member]
Number of Options outstanding, ending	15,000
Number of Options exercisable	3,750
Weighted average remaining contractual life of options outstanding and exercisable	9 years 5 months 1 day
Exercise Price $20.86 [Member]
Number of Options outstanding, ending	15,707
Number of Options exercisable	7,440
Weighted average remaining contractual life of options outstanding and exercisable	8 years 8 months 5 days
Exercise Price $21.13 [Member]
Number of Options outstanding, ending	27,422
Number of Options exercisable	27,422
Weighted average remaining contractual life of options outstanding and exercisable	5 years 3 months 22 days

X

- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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)(iii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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X

- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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X

- Definition

Weighted average remaining contractual term of outstanding stock options, 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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