Royalty Monetization (Details)	6 Months Ended
	Jun. 30, 2012
Accrued and unpaid interest through the redemption date
From and including March 9, 2012 to and including March 8, 2013	107.00%
From and including March 9, 2013 to and including March 8, 2014	103.50%
From and including March 9, 2014 and thereafter	100.00%