Collateralized Securities Transactions (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Brokers and Dealers [Abstract]
Securities reverse repurchase agreements	$ 101,444	$ 70,110
Fair value of securities received as collateral under reverse repurchase agreements	101,793	73,382
Securities sold under agreements to repurchase	103,443	70,273
Fair value of securities pledged as collateral under repurchase agreements	$ 103,619	$ 73,382

Amount, after the effects of master netting arrangements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes purchases of participations in pools of securities that are subject to a resale agreement and assets not subject to a master netting arrangement.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement.

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