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Debt and Financing Arrangements (2010 Notes) - Additional Information (Detail) - 2010 Convertible Senior Subordinated Notes [Member] - USD ($) |  | 1 Months Ended | 6 Months Ended
--- | --- | --- | ---
Oct. 01, 2015 | Oct. 30, 2015 | Jun. 30, 2016
Debt Instrument [Line Items] |  |  |
Conversion rate per $ 1,000 principal of convertible notes | $ 1,000 |  |
Conversion value of Notes |  | $ 71,800,000 |
Maturity date of notes |  |  | Oct. 01, 2015

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