Stockholders' Equity (Narrative) (Details) (USD $)
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6 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 1 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||
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Jun. 30, 2014
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Jun. 30, 2013
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Dec. 31, 2013
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Dec. 31, 2012
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Jun. 30, 2014
Approximations [Member]
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Jun. 30, 2013
Approximations [Member]
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Jun. 30, 2014
Approximations [Member]
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Jun. 30, 2013
Approximations [Member]
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Jun. 30, 2014
Chief Executive Officer [Member]
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Jun. 30, 2014
Issuance of 255,202 non-qualified 10 year options [Member]
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Jun. 30, 2014
Issuance of 1,667,181 non-qualified 8-10 year options [Member]
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Oct. 21, 2013
Registered Direct Offering and Outstanding Warrants [Member]
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Jul. 22, 2010
Registered Direct Offering and Outstanding Warrants [Member]
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Oct. 21, 2013
Registered Direct Offering and Outstanding Warrants [Member]
Approximations [Member]
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Jul. 22, 2010
Registered Direct Offering and Outstanding Warrants [Member]
Approximations [Member]
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Jun. 30, 2014
Issuance of 211,303 non-qualified 5-10 year options [Member]
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Jun. 30, 2014
May 5, 2014 Stock Options Granted [Member]
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Jun. 30, 2014
Minimum [Member]
Chief Executive Officer [Member]
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Jun. 30, 2014
Minimum [Member]
Directors, Officers and Employees [Member]
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Jun. 30, 2014
Minimum [Member]
Issuance of 1,667,181 non-qualified 8-10 year options [Member]
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Oct. 21, 2013
Minimum [Member]
Registered Direct Offering and Outstanding Warrants [Member]
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Jul. 22, 2010
Minimum [Member]
Registered Direct Offering and Outstanding Warrants [Member]
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Jun. 30, 2014
Minimum [Member]
Issuance of 211,303 non-qualified 5-10 year options [Member]
|
Jun. 30, 2014
Maximum [Member]
Chief Executive Officer [Member]
|
Jun. 30, 2014
Maximum [Member]
Directors, Officers and Employees [Member]
|
Jun. 30, 2014
Maximum [Member]
Issuance of 1,667,181 non-qualified 8-10 year options [Member]
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Oct. 21, 2013
Maximum [Member]
Registered Direct Offering and Outstanding Warrants [Member]
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Jul. 22, 2010
Maximum [Member]
Registered Direct Offering and Outstanding Warrants [Member]
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Jun. 30, 2014
Maximum [Member]
Issuance of 211,303 non-qualified 5-10 year options [Member]
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Jun. 30, 2014
Stock Compensation Plan [Member]
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Jun. 30, 2014
Maximum restricted shares granted [Member]
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Dec. 31, 2013
Maximum restricted shares granted to one person [Member]
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Jun. 30, 2014
Stock-based compensation [Member]
Approximations [Member]
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Jun. 30, 2013
Stock-based compensation [Member]
Approximations [Member]
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Jun. 30, 2014
Stock-based compensation [Member]
Approximations [Member]
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Jun. 30, 2013
Stock-based compensation [Member]
Approximations [Member]
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Jun. 30, 2014
Restricted Stock [Member]
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Dec. 31, 2012
Restricted Stock [Member]
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Jun. 30, 2014
Warrants [Member]
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Jun. 30, 2014
Maximum number of shares in respect to stock options [Member]
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Jun. 30, 2014
Employee Stock Option [Member]
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Dec. 31, 2011
Employee Stock Option [Member]
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Jun. 30, 2014
Stock and Stock Equivalents [Member]
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Common Stock, Shares Authorized | 500,000,000 | 500,000,000 | |||||||||||||||||||||||||||||||||||||||||
Common Stock, Shares, Outstanding | 15,071,536 | 15,057,243 | 19,500,218 | ||||||||||||||||||||||||||||||||||||||||
Class of Warrant or Right, Outstanding | 2,284,996 | ||||||||||||||||||||||||||||||||||||||||||
Number of options outstanding | 2,143,686 | 1,564,257 | 1,639,842 | ||||||||||||||||||||||||||||||||||||||||
Unvested Shares | 43,032 | ||||||||||||||||||||||||||||||||||||||||||
Common Stock, Capital Shares Reserved for Future Issuance | 2,500,000 | 1,250,000 | 166,667 | 266,667 | |||||||||||||||||||||||||||||||||||||||
Number of options vested and expected to vest outstanding | 1,564,257 | 1,530,200 | |||||||||||||||||||||||||||||||||||||||||
Stock option expense | $ 65,000 | $ 43,000 | $ 105,000 | $ 146,000 | |||||||||||||||||||||||||||||||||||||||
Non-qualified stock options | 820,396 | 255,202 | 1,677,181 | 211,303 | |||||||||||||||||||||||||||||||||||||||
Contractural lives | 10 years | 1 year 4 months 24 days | 1 year 4 months 24 days | 5 years | 5 years | 6 years 8 months 12 days | 6 years 9 months 18 days | 10 years | 10 years | ||||||||||||||||||||||||||||||||||
Lower Limit | $ 4.50 | $ 2.55 | $ 2.55 | ||||||||||||||||||||||||||||||||||||||||
Upper Limit | $ 14.40 | $ 23.85 | $ 15.30 | ||||||||||||||||||||||||||||||||||||||||
Aggregate intrinsic value | 127,474 | 0 | |||||||||||||||||||||||||||||||||||||||||
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Intrinsic Value | $ 2.77 | $ 1.45 | |||||||||||||||||||||||||||||||||||||||||
Unrecognized compensation costs | 0 | 19,000 | |||||||||||||||||||||||||||||||||||||||||
Restricted stock grants estimated forfeiture amount | 1.50% | 0.00% | |||||||||||||||||||||||||||||||||||||||||
Share based compensation | 125,297 | 210,653 | 100,000 | 100,000 | 200,000 | 100,000 | 100,000 | 100,000 | 200,000 | ||||||||||||||||||||||||||||||||||
Common Stock issued | 15,071,536 | 15,057,243 | |||||||||||||||||||||||||||||||||||||||||
Proceeds from Issuance of Common Stock | 4,400,000 | 13,700,000 | |||||||||||||||||||||||||||||||||||||||||
Common stock and warrants sold | 2,500,000 | 2,069,992 | |||||||||||||||||||||||||||||||||||||||||
Common stock to be purchased in the Offering | 1,250,000 | 1,034,996 | |||||||||||||||||||||||||||||||||||||||||
Exercisable term | 7 years 6 months | ||||||||||||||||||||||||||||||||||||||||||
Shares of common stock to be purchased by fixed combination | 0.5 | 0.5 | |||||||||||||||||||||||||||||||||||||||||
Purchase price of fixed combination | 1.75 | 6.60 | |||||||||||||||||||||||||||||||||||||||||
Warrant exercise price | $ 2.30 | $ 9.00 | |||||||||||||||||||||||||||||||||||||||||
Maximum common stock ownership to be eligible for exercise of warrants | 4.99% | 4.99% | 9.99% | 9.99% | |||||||||||||||||||||||||||||||||||||||
Net proceeds from the Offering received after payments of fees and expenses | 4,000,000 | ||||||||||||||||||||||||||||||||||||||||||
Amount allocated from the Offering to common stock | 2,800,000 | ||||||||||||||||||||||||||||||||||||||||||
Amount allocated from the Offering to warrants | 1,200,000 | ||||||||||||||||||||||||||||||||||||||||||
Volitility rate | 90.44% | 104.00% | 90.44% | 94.32% | |||||||||||||||||||||||||||||||||||||||
Risk-free interest rate | 1.68% | 2.01% | 1.67% | 3.35% | |||||||||||||||||||||||||||||||||||||||
Dividend yield | 0.00% | 0.00% | 0.00% | 0.00% | |||||||||||||||||||||||||||||||||||||||
Expected term | 5 years | 7 years 6 months | 5 years | 10 years | |||||||||||||||||||||||||||||||||||||||
Strike Price | $ 2.55 | ||||||||||||||||||||||||||||||||||||||||||
Stock options granted | 579,429 | 0 | 579,429 | ||||||||||||||||||||||||||||||||||||||||
Fair value of stock options granted | $ 10.42 | $ 10.85 | $ 1.79 | ||||||||||||||||||||||||||||||||||||||||
Fair market value on measurement date | $ 1.97 | ||||||||||||||||||||||||||||||||||||||||||
Pre-vesting forfeiture rate | 1.50% | ||||||||||||||||||||||||||||||||||||||||||
Value of vested awards | $ 0 |