Secondary Offering of Common Stock - Additional Information (Detail) (USD $)
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0 Months Ended | 9 Months Ended | |||||
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Nov. 01, 2014
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Feb. 01, 2014
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Nov. 27, 2013
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Jul. 31, 2014
Secondary Offering [Member]
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Nov. 01, 2014
Secondary Offering [Member]
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Jul. 31, 2014
Secondary Offering [Member]
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Jul. 31, 2014
Sun Capital [Member]
Secondary Offering [Member]
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Subsidiary, Sale of Stock [Line Items] | |||||||
Shares sold by selling shareholders | 4,975,254 | ||||||
Common stock price per share | $ 0.01 | $ 0.01 | $ 0.01 | $ 34.50 | |||
Common stock shares sold pursuant to exercise of underwriters option | 648,946 | ||||||
Ownership percentage | 54.60% | ||||||
Proceeds from Secondary Offering | $ 0 | ||||||
Expenses in connection with Secondary Offering | $ 571,000 |