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Stockholders' Equity (Narrative) (Details) (USD $)
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6 Months Ended | 3 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2013
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Jun. 30, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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Jun. 30, 2013
Approximations [Member]
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Jun. 30, 2012
Approximations [Member]
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Jun. 30, 2013
Approximations [Member]
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Jun. 30, 2012
Approximations [Member]
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Jun. 30, 2013
Chief Executive Officer [Member]
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Jun. 30, 2013
Issuance of 1,136,748 8-10 year options [Member]
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Jun. 30, 2013
Issuance of 229,558 8-10 year options [Member]
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Jun. 30, 2013
Issuance of 271,869 Non-Qualified 10 year options [Member]
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Jun. 30, 2013
Minimum [Member]
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Jun. 30, 2013
Minimum [Member]
Chief Executive Officer [Member]
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Jun. 30, 2013
Minimum [Member]
Directors, Officers and Employees [Member]
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Jun. 30, 2013
Minimum [Member]
Issuance of 1,136,748 8-10 year options [Member]
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Jun. 30, 2013
Minimum [Member]
Issuance of 229,558 8-10 year options [Member]
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Jun. 30, 2013
Maximum [Member]
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Jun. 30, 2013
Maximum [Member]
Chief Executive Officer [Member]
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Jun. 30, 2013
Maximum [Member]
Directors, Officers and Employees [Member]
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Jun. 30, 2013
Maximum [Member]
Issuance of 1,136,748 8-10 year options [Member]
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Jun. 30, 2013
Maximum [Member]
Issuance of 229,558 8-10 year options [Member]
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Jun. 30, 2013
Stock Compensation Plan [Member]
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Jun. 30, 2013
Maximum restricted shares granted [Member]
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Jun. 30, 2013
Maximum restricted shares granted to one person [Member]
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Jun. 30, 2013
Restricted Stock [Member]
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Dec. 31, 2012
Restricted Stock [Member]
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Jun. 30, 2013
Maximum number of shares in respect to stock options [Member]
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| Common Stock, Shares Authorized | 500,000,000 | 500,000,000 | ||||||||||||||||||||||||||
| Common Stock, Shares, Outstanding | 12,556,400 | 12,526,240 | ||||||||||||||||||||||||||
| Common stock reserved for issuance | 2,264 | |||||||||||||||||||||||||||
| Class of Warrant or Right, Outstanding | 1,034,996 | |||||||||||||||||||||||||||
| Number of options outstanding | 1,638,175 | 1,639,842 | 1,674,065 | |||||||||||||||||||||||||
| Unvested Shares | 15,136 | 43,032 | ||||||||||||||||||||||||||
| Total stock and stock equivalents outstanding | 15,244,707 | |||||||||||||||||||||||||||
| 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 | 1,593,174 | 1,523,536 | ||||||||||||||||||||||||||
| Stock option expense | $ 40,000 | $ 180,000 | $ 150,000 | $ 420,000 | ||||||||||||||||||||||||
| Non-qualified stock options | 665,088 | 1,136,748 | 229,558 | 271,869 | ||||||||||||||||||||||||
| Contractural lives | 10 years | 2 years 4 months 24 days | 3 years 1 month 6 days | 8 years | 8 years | 7 years 8 months 12 days | 7 years 9 months 18 days | 10 years | 10 years | |||||||||||||||||||
| Lower Limit | $ 5.42 | $ 5.70 | $ 4.50 | |||||||||||||||||||||||||
| Upper Limit | $ 23.85 | $ 19.20 | $ 14.40 | |||||||||||||||||||||||||
| Aggregate intrinsic value | 0 | 0 | ||||||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Intrinsic Value | $ 1.72 | $ 1.41 | ||||||||||||||||||||||||||
| Unrecognized compensation costs | 0.1 | 100,000 | ||||||||||||||||||||||||||
| Expected compensation cost | 100,000 | 100,000 | ||||||||||||||||||||||||||
| Weighted average recognition period | 0 years 8 months 12 days | |||||||||||||||||||||||||||
| Restricted stock grants estimated forfeiture amount | 1.40% | 2.90% | ||||||||||||||||||||||||||
| Stock based compensation | 210,653 | 628,445 | 100,000 | 300,000 | 200,000 | 600,000 | ||||||||||||||||||||||
| Common Stock issued | 12,556,400 | 12,526,240 | ||||||||||||||||||||||||||
| Proceeds from Issuance of Common Stock | $ 0 | $ 1,733 | ||||||||||||||||||||||||||