|
Summary of Significant Accounting Policies (Detail) (USD $)
|
9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 12 Months Ended | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
Feb. 02, 2012
|
Oct. 31, 2011
|
Apr. 30, 2011
|
Mar. 31, 2010
|
Dec. 31, 2011
Market [Member]
|
Sep. 30, 2012
Privately-Held Equity Securities [Member]
Minimum [Member]
|
Sep. 30, 2012
Privately-Held Equity Securities [Member]
Maximum [Member]
|
Sep. 30, 2012
ClearPoint System Reusable Components [Member]
|
Sep. 30, 2011
ClearPoint System Reusable Components [Member]
|
Sep. 30, 2012
Development Services [Member]
|
Sep. 30, 2012
Development Services for Other Third Parties [Member]
|
Dec. 31, 2011
Minimum [Member]
|
Feb. 02, 2012
Minimum [Member]
|
Dec. 31, 2011
Maximum [Member]
|
Dec. 31, 2011
The 2011 Junior Secured Convertible Note Payable [Member]
|
Dec. 31, 2011
Licensing Agreements [Member]
|
Dec. 31, 2010
Licensing Agreements [Member]
|
|
| Revenue, Net (in Dollars) | $ 118,000 | $ 435,000 | $ 404,000 | $ 10,000 | |||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 0.00% | 0.00% | 0.00% | 0.00% | |||||||||||||||||
| Fair Value Inputs, Discount Rate | 22.00% | 35.00% | 22.00% | 35.00% | |||||||||||||||||
| Fair Value Inputs, Discount for Lack of Marketability | 15.00% | 35.00% | 15.00% | 35.00% | |||||||||||||||||
| Fair Value Inputs, Discount Rate for Lack of Control | 20.00% | 30.00% | 20.00% | 30.00% | |||||||||||||||||
| Concentration Risk, Percentage | 12.00% | 17.00% | |||||||||||||||||||
| Derivative Liability, Fair Value, Net (in Dollars) | 0 | ||||||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 8.00% | 4.50% | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% | 0.00% | 3.50% | ||||||||||||
| Property, Plant and Equipment, Estimated Useful Lives | five | five | five | seven | |||||||||||||||||
| Finite-Lived Intangible Assets, Net (in Dollars) | 27,000 | 45,000 | |||||||||||||||||||
| Finite-Lived Intangible Assets, Accumulated Amortization (in Dollars) | 63,000 | 45,000 | |||||||||||||||||||
| Finite-Lived Intangible Assets, Future Amortization Expense, Annual (in Dollars) | 18,000 | ||||||||||||||||||||
| Business Acquisition, Contingent Consideration, at Fair Value (in Dollars) | 40,000 | ||||||||||||||||||||
| Other Deferred Costs, Net (in Dollars) | 366,503 | ||||||||||||||||||||
| Revenue from Grants (in Dollars) | $ 415,615 | ||||||||||||||||||||
| Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance | 100.00% | ||||||||||||||||||||