Cost Method Investments (Details 4) (Jinsheng [Member])	3 Months Ended
Mar. 31, 2012
Jinsheng [Member]
Cost Method Investments [Abstract]
Noncontrolling interest in subsidiaries	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%
Percentage of ownership interest in Jinsheng (in hundredths)	6.20%

The number of Series A-2 Preferred shares of Jinsheng , that may , at the option of the company be converted note into Series A-2 preferred shares in lieu of the company's right to demand payment on the maturity date.

No definition available.

Name:	cbl_SeriesA2PreferredShares
Namespace Prefix:	cbl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration