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Revolving Credit Facility (Details) (USD $)
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6 Months Ended | |
|---|---|---|
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Jun. 30, 2012
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Dec. 31, 2011
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| Revolving Credit Facility (Additional Textual) [Abstract] | ||
| Outstanding credit facility | $ 0 | $ 0 |
| Minimum cash and cash equivalents | $ 3,000,000 | |
| Percentage in payment of unused line fee | 0.25% | |
| Credit facility expiration date | Oct. 15, 2012 | |
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Line of Credit [Member]
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| Revolving Credit Facility (Textual) [Abstract] | ||
| Libor plus interest rate | 2.75% |