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Bank Call Loans | 12 Months Ended
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Dec. 31, 2011
Cash and Securities Segregated For Regulatory and Other Purposes, Receivable from and Payable to Brokers and Clearing Organizations, Bank Call Loans and Regulatory requirements [Abstract] |
Bank Call Loans | 7. Bank Call Loans Bank call loans, primarily payable on demand, bear interest at various rates but not exceeding the broker call rate, which was 2.0% at December 31, 2011 (2.0% at December 31, 2010). Details of the bank call loans are as follows. Amounts are expressed in thousands of dollars, except percentages.
|  |  | September 30, |  |  |  | September 30, |
|  | 2011 |  |  | 2010 |
Year-end balance |  | $ | 27,500 |  |  | $ | 147,000 |
Weighted interest rate (at end of year) |  |  | 1.25 | % |  |  | 1.28 | %
Maximum balance (at any month end) |  | $ | 178,600 |  |  | $ | 147,000 |
Average amount outstanding (during the year) |  | $ | 92,657 |  |  | $ | 61,639 |
Average interest rate (during the year) |  |  | 1.25 | % |  |  | 1.28 | %
Interest expense for the year ended December 31, 2011 on bank call loans was $1.2 million ($805,200 in 2010 and $900,300 in 2009).

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