Long-term Debt (Details 2) (USD $)	3 Months Ended	9 Months Ended	95 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
Long-term Debt
Interest expense associated with accrued interest	$ 3,956,000	$ 16,276,000	$ 17,570,000
Interest expense associated with accretion of debt discount	11,307,000	33,254,000	35,165,000
Interest expense associated with amortization of debt issue costs	539,000	1,497,000	1,572,000
Total	15,802,000	51,027,000	54,307,000
Capitalized interest costs	$ 5,100,000	$ 10,900,000