Fair Value of Financial Instruments (Details) (Fair value measurements recurring [Member], USD $)	Jun. 30, 2012	Dec. 31, 2011
Level 1 [Member]
Fair value of assets and liabilities on a recurring basis
Convertible securities
Total liabilities at fair value
Level 2 [Member]
Fair value of assets and liabilities on a recurring basis
Convertible securities
Total liabilities at fair value
Level 3 [Member]
Fair value of assets and liabilities on a recurring basis
Convertible securities	23,857	23,857
Total liabilities at fair value	$ 23,857	$ 23,857