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	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3, beginning of period	$ 11,668		$ 31,572		$ 29,055		$ 116,280
Transfers out of Level 3	0	[1]	0	[1]	0	[1]	(248,844)	[1]
Change in unrealized loss included in other comprehensive income	3,216		7,194		3,410		14,194
Unrealized loss included in net income	(29)		(70)		(261)		(355)
Realized gain on sale of available for sale securities	(1,680)		269		2,656		269
Purchases/capital calls	173		0		173		159,412
Sales/proceeds	(12,881)		(7,740)		(34,576)		(7,740)
Accretion/amortization	10		26		62		214
Calls/paydowns	0		(483)		(42)		(2,662)
Level 3, end of period	$ 477		$ 30,768		$ 477		$ 30,768

[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 of 2013, the Company engaged a third-party pricing vendor to provide monthly fair value measurements. This 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 CLO is an active market, and there is ample price transparency.