Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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+ Details

- Definition

Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

+ References+ Details

Note 13 - Fair Value Measurements (Detail) (USD $)	3 Months Ended
Note 13 - Fair Value Measurements (Detail) (USD $)	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Minimum [Member]	Mar. 31, 2013 Maximum [Member]	Mar. 31, 2013 Real Estate [Member]	Mar. 31, 2013 Before Impairment [Member]	Mar. 31, 2012 Before Impairment [Member]	Mar. 31, 2013 Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member]	Mar. 31, 2012 Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2011 Fair Value, Inputs, Level 3 [Member]
Available-for-sale Securities	$ 299,073,000							$ 415,000	$ 415,000	$ 407,000	$ 405,000
Fair Value Inputs, Discount Rate			0.00%	60.00%	8.00%
Real Estate Acquired Through Foreclosure	3,900,000	1,500,000				4,100,000	1,800,000
Impairment of Real Estate	$ 228,000	$ 248,000