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Stock Based Payment Arrangements (Details Textual) (USD $)
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1 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|---|---|
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Jul. 30, 2012
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Jun. 30, 2012
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Jun. 30, 2012
Stock Options [Member]
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Jun. 30, 2011
Stock Options [Member]
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Jun. 30, 2012
Stock Options [Member]
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Jun. 30, 2011
Stock Options [Member]
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| Stock Based Payment Arrangements (Textual) [Abstract] | ||||||
| Stock options | 30,000 | 0 | 280,800 | 100,000 | 300,800 | |
| Weighted-average grant date fair value | $ 0.00 | $ 4.56 | $ 1.03 | $ 4.49 | ||
| Stock options previously granted have vested | 160,725 | |||||
| Stock options forfeited | 134,666 | |||||