Fair Value Measurements (Schedule Of Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3, beginning of period	$ 116,280		$ 32,814
Transfers out of Level 3	(248,844)	[1]	(975)	[1]
Change in unrealized loss included in other comprehensive income	17,401		3,572
Unrealized loss included in net income	(392)		(1,243)
Realized gain on sale of available for sale securities	269		0
Net other-than-temporary impairment charges	(7,277)		0		0
Purchases/capital calls	160,412		88,891
Sales/proceeds	(7,740)		0
Accretion/amortization	243		233
Calls/paydowns	(2,908)		(7,012)
Level 3, end of period	30,055		116,280		32,814
Pooled trust preferred securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net other-than-temporary impairment charges	$ (4,666)

[1] As of April 1, 2013, the CLO portfolio was transferred from Level 3 to Level 2 based on having more observable inputs in determining fair value. In prior quarters, the CLO portfolio was priced using average non-binding broker quotes. During the second quarter, the Company engaged a third-party pricing vendor to provide monthly fair value measurements. The methodology used is a combination of matrix pricing, observed market activity and metrics. Pricing inputs such as credit spreads are observable and market corroborated and, therefore, the CLO portfolio qualifies for Level 2 categorization. The market for these CLOs is active and there is ample price transparency.