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Related Party (Details Textual) (USD $)
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1 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | |||
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Sep. 30, 2009
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Oct. 31, 2009
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Jan. 31, 2013
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Jan. 31, 2012
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Apr. 30, 2012
Chief Executive Officer [Member]
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Sep. 01, 2009
President [Member]
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Oct. 31, 2012
Mr Styslinger [Member]
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| Percentage Holding By Related Party | 32.00% | ||||||
| Related Party Transaction, Expenses from Transactions with Related Party | $ 36,600,000 | $ 0 | |||||
| Stock Repurchased During Period, Shares (in shares) | 764,024 | 63,000 | |||||
| Stock Repurchased During Period, Value | 6,200,000 | 500,000 | |||||
| Stock Repurchase Price Per Share (in dollars per share) | $ 8.12 | $ 8.00 | |||||
| Other accrued expenses | $ 16,173,000 | $ 13,345,000 | $ 1,000,000 |
| X | ||||||||||
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- Definition
Percentage of interest held by Related party. No definition available.
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| X | ||||||||||
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- Definition
The price per share that have been repurchased during the period and have not been retired and are not held in treasury. No definition available.
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- Definition
Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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