Stock Options and Warrants - Schedule of Stock Option Activity (Details) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, beginning balance (shares)	2,204,000
Granted (shares)	50,000	50,000
Exercised (shares)	(314,000)
Cancelled (shares)	(50,000)	(522,000)
Options outstanding, ending balance (shares)	1,890,000	2,204,000	2,676,000
Options exercisable at December 31, 2013 (shares)	1,891,000
Range of exercise prices Granted (usd per share)	$ 4,950	$ 1,590.00
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options outstanding, Weighted average exercise price per share, beginning balance (usd per share)	$ 8.45
Options exercised, weighted average exercise price	$ 3.23
Granted, Weighted average exercise price per share (usd per share)	$ 4.95	$ 1.59
Cancelled, Weighted average exercise price per share (usd per share)	$ 12.84	$ 12.84
Options outstanding, Weighted average exercise price per share, ending balance (usd per share)	$ 6.63	$ 8.45	$ 6.93
Options exercisable at December 31, 2012, Weighted average exercise price per share (usd per share)	$ 5.70
Options outstanding, Weighted average remaining contractual life	1 year 5 months 16 days	2 years 3 months 4 days	1 year 9 months 7 days
Granted, Weighted average remaining contractual life	4 years 10 months 13 days	4 years 10 months 6 days
Options exercisable, Weighted average remaining contractual life	1 year 4 months 21 days
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Range of exercise prices Cancelled (usd per share)	$ 4.71	$ 4.71
Range of exercise prices exercised (usd per share)	$ 2.79
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Range of exercise prices Cancelled (usd per share)	$ 42.75	$ 26.22
Range of exercise prices exercised (usd per share)	$ 4.71

Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercised in Period, Exercise Price

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Exercise Price

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Granted, Weighted Average Remaining Contractual Term

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Exercise Price

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ 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)

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

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

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)-(4)

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- Definition

Weighted average price of options that were either forfeited or expired.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)-(4)

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

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB

-Name Accounting Standards Codification

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-Topic 718

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

-Subparagraph (e)(1)

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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