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Consolidated Statements of Cash Flows (Parenthetical)
Mar. 31, 2014
Mar. 31, 2013
6.00% Senior Secured Notes
   
Interest rate 6.00% 6.00%
6.25% Senior Secured Notes
   
Interest rate 6.25% 6.25%
9.5% Senior Secured Notes
   
Interest rate 9.50% 9.50%