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Notes Payable (Detail) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2012
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Dec. 31, 2011
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| Debt Instrument [Line Items] | ||||||
| Note payable | $ 199,616 | $ 197,184 | ||||
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Note payable under revolving credit agreement with principal shareholder
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| Debt Instrument [Line Items] | ||||||
| Note payable | 23,650 | 22,550 | ||||
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Notes payable to clearing firm under forgivable loan
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| Debt Instrument [Line Items] | ||||||
| Note payable | 22,143 | 22,143 | ||||
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Note payable to a subsidiary of Premier's former shareholder
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| Debt Instrument [Line Items] | ||||||
| Note payable | 741 | 904 | ||||
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Notes payable to finance Securities America acquisition
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| Debt Instrument [Line Items] | ||||||
| Note payable | $ 153,082 | [1] | $ 151,587 | [1] | ||
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