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Change in Rate Based on Leverage Ratio (Parenthetical) (Detail)
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Sep. 30, 2012
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|---|---|
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Maximum | Less than 3.25 to 1.00
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| Debt Instrument [Line Items] | |
| Leverage ratio | 3.25 |
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Maximum | Greater than or equal to 3.25 to 1.00 but less than 4.50 to 1.00
|
|
| Debt Instrument [Line Items] | |
| Leverage ratio | 4.50 |
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Maximum | Greater than or equal to 4.50 to 1.00 but less than 6.00 to 1.00
|
|
| Debt Instrument [Line Items] | |
| Leverage ratio | 6 |
|
Minimum | Greater than or equal to 3.25 to 1.00 but less than 4.50 to 1.00
|
|
| Debt Instrument [Line Items] | |
| Leverage ratio | 3.25 |
|
Minimum | Greater than or equal to 4.50 to 1.00 but less than 6.00 to 1.00
|
|
| Debt Instrument [Line Items] | |
| Leverage ratio | 4.5 |
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Minimum | Greater than or equal to 6.00 to 1.00
|
|
| Debt Instrument [Line Items] | |
| Leverage ratio | 6 |