Shareholders' Equity (Details 3) (Stock Option [Member], USD $)	12 Months Ended
Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding	136,256
Weighted average remaining contractual life (years)	3 years 6 months 11 days
Options exercisable	58,982
Weighted average remaining contractual of options exercisable (years)	3 years 4 days
3.23 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	3.23
Options outstanding	375
Weighted average remaining contractual life (years)	2 years 1 month 21 days
Options exercisable	250
Weighted average remaining contractual of options exercisable (years)	2 years 1 month 21 days
3.40 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	3.40
Options outstanding	375
Weighted average remaining contractual life (years)	1 year 11 months 19 days
Options exercisable	375
Weighted average remaining contractual of options exercisable (years)	1 year 11 months 19 days
3.80 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	3.80
Options outstanding	6,987
Weighted average remaining contractual life (years)	1 year 11 months 19 days
Options exercisable	5,590
Weighted average remaining contractual of options exercisable (years)	1 year 11 months 19 days
3.88 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	3.88
Options outstanding	375
Weighted average remaining contractual life (years)	4 years 10 months 17 days
Options exercisable
Weighted average remaining contractual of options exercisable (years)	0 years
3.88 one [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	3.88
Options outstanding	90,000
Weighted average remaining contractual life (years)	3 years 10 months 6 days
Options exercisable	29,998
Weighted average remaining contractual of options exercisable (years)	3 years 10 months 6 days
4.02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	4.02
Options outstanding	5,000
Weighted average remaining contractual life (years)	4 years 6 months 18 days
Options exercisable
Weighted average remaining contractual of options exercisable (years)	0 years
6.67 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	6.67
Options outstanding	10,000
Weighted average remaining contractual life (years)	4 years 3 months 11 days
Options exercisable
Weighted average remaining contractual of options exercisable (years)	0 years
6.67 one [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	6.67
Options outstanding	375
Weighted average remaining contractual life (years)	4 years 3 months 11 days
Options exercisable
Weighted average remaining contractual of options exercisable (years)	0 years
8.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	8.00
Options outstanding	5,749
Weighted average remaining contractual life (years)	1 year 3 months
Options exercisable	5,749
Weighted average remaining contractual of options exercisable (years)	1 year 3 months
33.60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	33.60
Options outstanding	3,750
Weighted average remaining contractual life (years)	3 years 2 months 27 days
Options exercisable	3,750
Weighted average remaining contractual of options exercisable (years)	3 years 2 months 27 days
50.40 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	50.40
Options outstanding	13,170
Weighted average remaining contractual life (years)	2 years 3 months 22 days
Options exercisable	13,170
Weighted average remaining contractual of options exercisable (years)	2 years 3 months 22 days
60.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	60.00
Options outstanding	100
Weighted average remaining contractual life (years)	1 year 2 months 27 days
Options exercisable	100
Weighted average remaining contractual of options exercisable (years)	1 year 2 months 27 days

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- 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://www.xbrl.org/2003/role/presentationRef

-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=6415400&loc=d3e5070-113901

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-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=6415400&loc=d3e5070-113901

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- 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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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