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Shareholders' Equity (Details 1)	12 Months Ended
	Dec. 31, 2018 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding | shares	415,510
Number exercisable | shares	159,058
Stock Option [Member] | 6.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$ 6.00
Number outstanding | shares	2,250
Weighted average exercise price	$ 6.00
Weighted average remaining contractual life	6 months 21 days
Number exercisable | shares	2,250
Weighted average exercise price	$ 6.00
Weighted average remaining contractual life	6 months 21 days
Stock Option [Member] | 11.12-14.52 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, Minimum	$ 11.12
Exercise price, Maximum	$ 14.52
Number outstanding | shares	259,558
Weighted average exercise price	$ 11.86
Weighted average remaining contractual life	2 years 2 months 19 days
Number exercisable | shares	156,808
Weighted average exercise price	$ 11.89
Weighted average remaining contractual life	2 years 18 days
Stock Option [Member] | 18.90-19.85 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, Minimum	$ 18.90
Exercise price, Maximum	$ 19.85
Number outstanding | shares	153,702
Weighted average exercise price	$ 19.42
Weighted average remaining contractual life	3 years 6 months 7 days
Number exercisable | shares
Weighted average exercise price
Weighted average remaining contractual life	0 years

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- Definition

Exercise Price.

+ References

No definition available.

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
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- 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.

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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.

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-Publisher FASB
-Name Accounting Standards Codification
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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.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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