General Information - Reconciliation of Total Interest Cost to Interest Expense (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest Costs Incurred [Abstract]
Total interest cost including amortization of debt issuance costs	$ 99,080	$ 83,890	$ 84,349
Capitalized interest	(74,237)	(37,674)	(11,212)
Total interest expense as reported	$ 24,843	$ 46,216	$ 73,137