Securities (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013
Company's book value of pledged securities
Book value of pledged securities	$ 487,367

- Definition

Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

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