Business Segments - Additional Information (Detail)		3 Months Ended
	Jan. 17, 2019 Employee	Mar. 31, 2019 Store Segment
Segment Reporting [Abstract]
Number of reportable segments | Segment		4
Number of stores | Store		3
Number of segments combined | Segment		2
Restructuring, completion period	10 months
Restructuring, expected number of positions eliminated | Employee	300
Restructuring, remaining number of positions after elimination | Employee	400