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Trust Preferred Securities (Parenthetical) (Detail)
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Jun. 30, 2012
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|---|---|
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Three Month LIBOR | After tenth anniversary in 2015
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| Debt Instrument [Line Items] | |
| Debt instrument interest rate, margin | 3.40% |
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LIBOR | After fifth anniversary in 2011
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|
| Debt Instrument [Line Items] | |
| Debt instrument interest rate, margin | 3.30% |
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LIBOR | After fifth anniversary in 2012
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| Debt Instrument [Line Items] | |
| Debt instrument interest rate, margin | 3.00% |