Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details)

v2.4.0.6
Related Party Transactions (Details) (Liberty Parties [Member])
12 Months Ended
Dec. 31, 2012
Related Party Transaction [Line Items]  
Voting power of equity securities held 20.00%
Percentage of nomination of director by the related party 20.00%
Percentage of ownership upon spin-off 30.00%
Maximum ownership percentage entitled after the transfer of equity securities 15.00%
Minimum value of tender offer as a percentage of capital stock which results in reliving of obligations 35.00%
Minimum ownership percentage held by third party that would result in reliving of obligations 20.00%
Minimum ownership interest after consummation of a competing offer that would result in termination of consent 50.00%
Minimum ownership interest held at second anniversary that would result in termination of obligations 50.00%
Minimum [Member]
 
Related Party Transaction [Line Items]  
Additional percentage under the agreement 5.00%
Maximum [Member]
 
Related Party Transaction [Line Items]  
Additional percentage under the agreement 35.00%