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Commitments And Contingencies (Narrative) (Details) (USD $)
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3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2010
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Dec. 31, 2010
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Dec. 31, 2009
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Dec. 31, 2008
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| Commitments And Contingencies [Abstract] | ||||
| Lease and rental expense | $ 989,170 | $ 859,570 | $ 919,735 | |
| Sublease rental income | 520,090 | 520,090 | 498,733 | |
| Total amount to be received in the future from non-cancellable subleases | 31,100,000 | |||
| Proceeds from the settlement of the indemnification claim with Stealth | $ 875,000 | |||