Stockholders' Equity (Details 1) (Employee Stock Option [Member], USD $)	12 Months Ended
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	$ 1.17
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 8.68
Number Options Outstanding	1,382,000
Options Outstanding, Weighted Avg. Remaining Life (in years)	1 year 6 months 7 days
Options Outstanding, Weighted Avg. Exercise Price (in dollars per share)	$ 3.49
Number Options Exercisable	608,000
Options Exercisable, Weighted Avg. Remaining Life (in years)	6 months 7 days
Options Exercisable, Weighted Avg. Exercise Price (in dollars per share)	$ 6.39
Exercise Price Range One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (in dollars per share)	$ 1.17
Number Options Outstanding	202,000
Options Outstanding, Weighted Avg. Remaining Life (in years)	3 years 2 months 1 day
Options Outstanding, Weighted Avg. Exercise Price (in dollars per share)	$ 1.17
Number Options Exercisable	0
Options Exercisable, Weighted Avg. Remaining Life (in years)	0 years
Options Exercisable, Weighted Avg. Exercise Price (in dollars per share)	$ 0
Exercise Price Range Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	$ 1.20
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 1.32
Number Options Outstanding	715,000
Options Outstanding, Weighted Avg. Remaining Life (in years)	2 years
Options Outstanding, Weighted Avg. Exercise Price (in dollars per share)	$ 1.22
Number Options Exercisable	143,000
Options Exercisable, Weighted Avg. Remaining Life (in years)	2 years
Options Exercisable, Weighted Avg. Exercise Price (in dollars per share)	$ 1.23
Exercise Price Range Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (in dollars per share)	$ 7.92
Number Options Outstanding	435,000
Options Outstanding, Weighted Avg. Remaining Life (in years)	4 days
Options Outstanding, Weighted Avg. Exercise Price (in dollars per share)	$ 7.92
Number Options Exercisable	435,000
Options Exercisable, Weighted Avg. Remaining Life (in years)	4 days
Options Exercisable, Weighted Avg. Exercise Price (in dollars per share)	$ 7.92
Exercise Price Range Four [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (in dollars per share)	$ 8.68
Number Options Outstanding	30,000
Options Outstanding, Weighted Avg. Remaining Life (in years)	9 months 14 days
Options Outstanding, Weighted Avg. Exercise Price (in dollars per share)	$ 8.68
Number Options Exercisable	30,000
Options Exercisable, Weighted Avg. Remaining Life (in years)	9 months 14 days
Options Exercisable, Weighted Avg. Exercise Price (in dollars per share)	$ 8.68

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

+ 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)(iii)

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

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)

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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)

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

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