Dividends - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Apr. 24, 2018	Feb. 14, 2018	Mar. 25, 2018	Mar. 26, 2017	Dec. 31, 2017	[1]
Dividends Payable [Line Items]
Dividends declared per share		$ 0.55	$ 0.55	$ 0.46
Common stock dividends accrued			$ 24,006		$ 536
Dividend declared date		Feb. 14, 2018
Record date of dividend		Mar. 15, 2018
Dividend payable date		Mar. 30, 2018
Subsequent Event [Member]
Dividends Payable [Line Items]
Dividends declared per share	$ 0.55
Record date of dividend	Jun. 15, 2018
Dividend payable date	Jun. 29, 2018

[1] Note: The balance sheet at December 31, 2017 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.