|
Investments and Fair Value Measurements (Details Textual) (USD $)
|
9 Months Ended | 12 Months Ended |
|---|---|---|
|
Sep. 30, 2012
|
Dec. 31, 2011
|
|
| Investments and Fair Value Measurements (Textual) | ||
| Cash and cash equivalents, amortization premium paid | $ 1,099 | |
| Short-term investments, amortization premium paid | $ 8,733 | |
| Incremental discount rate premium due to lack of marketability | 10.00% |