Borrowed Funds - Federal Home Loan Bank Advances, Disclosure (Detail) (Long-Term Borrowings [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Long-Term Borrowings [Member]
Debt Instrument [Line Items]
2013	$ 26,102
2014	102
2015	175,102
2016	182,101
2017	584,969
Thereafter	1,039,994
Total long-term FHLB advances	$ 2,008,370	$ 2,036,690

Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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+ Details

- Definition

Amount of federal home loan bank advances maturing after the fifth fiscal year following the latest fiscal year.

+ References+ Details

- Definition

Amount of federal home loan bank advances maturing in the fifth fiscal year following the latest fiscal year.

+ References+ Details

- Definition

Amount of federal home loan bank advances maturing in the second fiscal year following the latest fiscal year.

+ References+ Details

- Definition

Amount of federal home loan bank advances maturing in the fourth fiscal year following the latest fiscal year.

+ References+ Details

- Definition

Amount of federal home loan bank advances maturing in the third fiscal year following the latest fiscal year.

+ References+ Details

- Definition

Amount of federal home loan bank advances maturing in the next fiscal year following the latest fiscal year.

+ References+ Details