Fair Value (Detail) - Fair Value Measurements (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Trading securities
Total trading securities	$ 17,317		$ 14,162
Securities available-for-sale
CDOs	18,309	[1]	12,129	[1]	13,394	[1]	14,858
Total	1,112,725		1,082,403
Liabilities
Derivative liabilities	1,472		2,270
Fair Value, Inputs, Level 1
Trading securities
Money market funds	1,847		1,554
Mutual funds	15,470		12,608
Total trading securities	17,317		14,162
Securities available-for-sale
U.S. agency securities	0		0
CMOs	0		0
Other MBSs	0		0
Municipal securities	0		0
CDOs	0		0
Corporate debt securities	0		0
Hedge fund investment	0		0
Other equity securities	44		43
Total	44		43
Mortgage servicing rights	0	[2]	0	[2]
Derivative asset fair value	0	[2]	0	[2]
Liabilities
Derivative liabilities	0	[3]	0	[3]
Fair Value, Inputs, Level 2
Trading securities
Money market funds	0		0
Mutual funds	0		0
Total trading securities	0		0
Securities available-for-sale
U.S. agency securities	500		508
CMOs	475,768		400,383
Other MBSs	136,164		122,900
Municipal securities	461,393		520,043
CDOs	0
Corporate debt securities	14,929		15,339
Hedge fund investment	3,179		1,616
Other equity securities	2,439		9,442
Total	1,094,372		1,070,231
Mortgage servicing rights	0	[2]	0	[2]
Derivative asset fair value	2,235	[2]	0	[2]
Liabilities
Derivative liabilities	3,707	[3]	2,270	[3]
Fair Value, Inputs, Level 3
Trading securities
Money market funds	0		0
Mutual funds	0		0
Total trading securities	0		0
Securities available-for-sale
U.S. agency securities	0		0
CMOs	0		0
Other MBSs	0		0
Municipal securities	0		0
CDOs	18,309		12,129
Corporate debt securities	0		0
Hedge fund investment	0		0
Other equity securities	0		0
Total	18,309		12,129
Mortgage servicing rights	1,893	[2]	985	[2]
Derivative asset fair value	0	[2]	0	[2]
Liabilities
Derivative liabilities	$ 0	[3]		[3]

[1] There were no purchases, issuances, or settlements of CDOs during the periods presented.

[2] Included in other assets in the Consolidated Statements of Financial Condition.

[3] Included in other liabilities in the Consolidated Statements of Financial Condition.