Cost Method Investments (Details 4) (Jinsheng [Member])	3 Months Ended
	Mar. 31, 2013
Jinsheng [Member]
Cost Method Investments [Abstract]
Debt Instrument, Interest Rate, Stated Percentage	8.00%
Percentage of ownership interest in Jinsheng (in hundredths)	6.20%
Number of series 2 ordinary shares secured against convertible security notes	16,565,534
Series A-2 Preferred Shares	16,565,534
Noncontrolling Interest, Increase in Ownership Percentage	2.275%
Secured Convertible Note Amended Maturity Date	May 30, 2013
Increased Interest Rate After Maturity date	30.00%