12.5% Senior Secured Notes due 2017 (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Feb. 07, 2012
12.5% Senior Secured Notes due 2017 (Textual) [Abstract]
Frequency of interest payment	semi-annually
Date of first required payment	Apr. 15, 2012
Additional interest rate	0.02
Aggregate principal amount of the notes	25.00%
Covenants, maximum unpaid principal payment	$ 15
Debt instrument payment period	60 days
Interest rate on Senior secured notes due 2017		12.50%
Maximum
12.5% Senior Secured Notes due 2017 (Textual) [Abstract]
Secured leverage ratio	4.75
Minimum
12.5% Senior Secured Notes due 2017 (Textual) [Abstract]
Secured leverage ratio	1.00
Twelve Point Five Percentage Senior Secured Notes Due Two Thousand Seventeen
12.5% Senior Secured Notes due 2017 (Textual) [Abstract]
Notes issued principal amount		275
Interest rate on Senior secured notes due 2017	12.50%
Issue price percentage of principal amount		97.00%