Annual report pursuant to Section 13 and 15(d)

Summary of Interest Rate Swap Agreement Designated as Hedge Agreement (Detail)

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Summary of Interest Rate Swap Agreement Designated as Hedge Agreement (Detail) - Interest Rate Swap
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
Interest Rate Swaps [Line Items]  
Nominal Amount $ 100,000
Effective Date Nov. 01, 2011
Pay Rate 1.715%
Receive Rate 1-Month LIBOR
Expiration Date Apr. 01, 2016
Estimated Total Fair Value at December 31, 2015 $ 373 [1]
[1] Included in accrued other current liabilities on the consolidated balance sheet as of December 31, 2015.