Segment Information - Schedule of Reconciling Information by Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Net Sales	$ 1,904,523	$ 2,089,888	$ 3,535,823	$ 3,790,324
Depreciation & Amortization	23,814	24,768	47,390	47,587
Interest	29,382	28,957	54,283	55,699
Income before income taxes	86,263	75,602	133,253	101,004
Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,843,314	2,026,534	3,421,801	3,677,385
Depreciation & Amortization	17,806	18,536	35,387	35,493
Interest	25,819	30,184	51,403	56,201
Income before income taxes	107,275	91,369	159,036	130,120
Operating Segments | Northeast
Segment Reporting Information [Line Items]
Net Sales	350,671	357,258	637,268	641,650
Depreciation & Amortization	3,256	3,523	6,469	6,690
Interest	5,280	6,012	10,400	11,556
Income before income taxes	18,674	12,110	25,450	13,253
Operating Segments | Southeast
Segment Reporting Information [Line Items]
Net Sales	419,085	454,734	808,564	844,187
Depreciation & Amortization	3,100	2,922	6,147	5,508
Interest	5,521	6,545	11,146	12,395
Income before income taxes	24,281	16,266	41,349	27,839
Operating Segments | South
Segment Reporting Information [Line Items]
Net Sales	476,577	538,168	937,656	1,006,615
Depreciation & Amortization	4,914	5,326	9,773	10,188
Interest	5,859	6,740	11,795	12,689
Income before income taxes	29,117	23,435	58,259	43,466
Operating Segments | West
Segment Reporting Information [Line Items]
Net Sales	596,981	676,374	1,038,313	1,184,933
Depreciation & Amortization	6,536	6,765	12,998	13,107
Interest	9,159	10,887	18,062	19,561
Income before income taxes	35,203	39,558	33,978	45,562
All other
Segment Reporting Information [Line Items]
Net Sales	61,209	63,354	114,022	112,939
Depreciation & Amortization	6,008	6,232	12,003	12,094
Interest	3,563	(1,227)	2,880	(502)
Income before income taxes	$ (21,012)	$ (15,767)	$ (25,783)	$ (29,116)