Basis of Presentation - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended	9 Months Ended
	Oct. 19, 2016	Sep. 30, 2016	Sep. 30, 2016	Oct. 02, 2015
Excess Tax Benefit [Line Items]
Excess Tax Benefit From Share Based Compensation Operating Activities			$ 0	$ 4,983,000
New Accounting Pronouncement, Early Adoption, Effect
Excess Tax Benefit [Line Items]
Net Income Loss Attributable to Parent Excluding Excess Tax Benefit		$ 11,250,000	32,265,000
Excess Tax Benefit From Share Based Compensation Operating Activities		$ 39,000	4,827,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Retained Earnings			$ 78,000
Earnings Per Share Diluted Excluding Excess Tax Benefit		$ 0.41	$ 1.18
Subsequent Event
Excess Tax Benefit [Line Items]
Common stock, dividends per share declared, subsequent event	$ 0.18
Dividends Payable, Date to be Paid	Dec. 23, 2016
Dividends Payable, Date of Record	Dec. 02, 2016
Dividends Payable, Date Declared	Oct. 19, 2016