Interest Costs (Tables)

v2.4.0.6

Interest Costs (Tables)	12 Months Ended
	Dec. 31, 2012
Interest Costs Disclosure [Abstract]
Interest costs	The following is a summary of our interest costs:   For the Years Ended December 31,   2012   2011   2010 Interest costs charged to expense $ 265,321   $ 304,938   $ 295,643 Interest costs capitalized 31,982   33,522   63,880 Total interest costs incurred $ 297,303   $ 338,460   $ 359,523