Short-Term and Long-Term Debt - Summary of Term Loan (Details) - Secured Debt - Term Loan |
Jul. 15, 2014
USD ($)
|
Oct. 31, 2015
USD ($)
|
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|---|---|---|---|---|---|---|
| Debt Instrument [Line Items] | ||||||
| Aggregate principal amount | $ 250,000,000 | $ 246,875,000 | ||||
| LIBOR interest floor | 0.75% | |||||
| Quarterly payment, percent of principal | 0.25% | |||||
| Periodic payment | $ 600,000 | |||||
| Credit agreement threshold total secured net leverage ratio | 2.50 | |||||
| Credit agreement, mandatory prepayment requirement prepayment percentage of excess annual cash flow | 50.00% | |||||
| Unamortized Discount | (1,076,000) | |||||
| Notes Payable | 245,799,000 | |||||
| Long-term Debt, Fair Value | [1],[2] | $ 247,184,000 | ||||
| London Interbank Offered Rate (LIBOR) | ||||||
| Debt Instrument [Line Items] | ||||||
| Basis spread on variable rate | 3.00% | |||||
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