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Bank Call Loans - Summary of Bank Call Loans (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Brokers And Dealers [Abstract] |  |
Year-end balance | $ 118,200 | $ 128,300
Weighted interest rate (at end of year) | 1.28% | 1.23%
Maximum balance (at any month-end) | 266,300 | 171,400
Average amount outstanding (during the year) | $ 164,434 | $ 73,227
Average interest rate (during the year) | 1.25% | 1.27%

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- Definition Bank call loans average amount outstanding during year. + References No definition available. + Details
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- Definition Bank loans maximum balance at any month end. + References No definition available. + Details
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- Definition Weighted average interest rate. + References No definition available. + Details
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- Definition Amounts due on short-term bank loans secured by customers' securities on the balance sheet date. + References No definition available. + Details
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- Details
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