Components of Interest Expense (Detail) (USD $) In Thousands, except Share data in Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Banking and Thrift [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		19.2
Interest on borrowings and related fees	$ 23,140	$ 13,583
Accretion of original issue discount 1	0	321
Amortization of debt issuance costs	1,012	626
Capitalized interest 2	(1,618)	(51)
Interest expense	$ 22,534	$ 14,479