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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2011
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events In January 2012, we entered into interest rate swap agreements to manage the risks associated with our variable rate debt as required by our New Credit Facilities. These swaps fix the interest rate at 3.0% on a notional amount of $122,500 of the outstanding debt, are not designated as hedges and expire on March 31, 2015.