Changes in Carrying Amount of Deferred Debt Issuance Costs (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Balance at beginning of period	$ 13,761	$ 17,125
Debt issuance costs and performance guarantees	4,905
Amortization of interest expense	(3,715)	(3,364)
Balance at end of period	$ 14,951	$ 13,761