Aggregate dividends declared during the period for each share of common stock outstanding.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Nov. 05, 2019	Oct. 24, 2019	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Subsequent Event [Line Items]
Quarterly cash dividend declared per common stock			$ 0.105	$ 0.105	$ 0.315	$ 0.315
Total cash purchase price					$ 22,457	$ 100,787
Subsequent Event [Member] \| Roadrunner Intermodal
Subsequent Event [Line Items]
Total cash purchase price	$ 54,900
Fourth Quarter \| Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends payable, date declared		Oct. 24, 2019
Quarterly cash dividend declared per common stock		$ 0.105
Dividends payable, recorded date		Dec. 02, 2019
Dividends payable, date to be paid		Jan. 02, 2020