Segment and Product Information - Schedule of Reconciling Information by Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	$ 1,843,297	$ 1,677,300	$ 3,376,361	$ 3,074,415
Depreciation & Amortization	24,173	30,558	47,765	61,349
Interest	33,710	42,802	69,867	78,027
Income (loss) before income taxes	57,631	33,620	61,751	21,175
Operating Segments
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	1,785,609	1,640,286	3,281,242	2,996,288
Depreciation & Amortization	18,224	24,085	35,939	48,461
Interest	25,421	22,112	48,329	41,876
Income (loss) before income taxes	88,021	73,457	119,199	97,636
Operating Segments | Northeast
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	325,526	325,765	608,296	583,785
Depreciation & Amortization	3,475	5,406	6,953	10,889
Interest	5,353	4,608	10,252	8,758
Income (loss) before income taxes	11,853	12,456	14,790	15,065
Operating Segments | Southeast
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	389,743	363,982	743,716	670,588
Depreciation & Amortization	2,687	3,134	5,193	6,304
Interest	5,866	4,751	11,191	9,066
Income (loss) before income taxes	14,356	12,702	24,418	19,650
Operating Segments | South
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	481,099	427,727	930,952	833,124
Depreciation & Amortization	4,936	5,812	9,729	11,882
Interest	6,138	5,661	11,722	10,841
Income (loss) before income taxes	25,165	19,822	46,496	35,673
Operating Segments | West
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	589,241	522,812	998,278	908,791
Depreciation & Amortization	7,126	9,733	14,064	19,386
Interest	8,064	7,092	15,164	13,211
Income (loss) before income taxes	36,647	28,477	33,495	27,248
All other
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	57,688	37,014	95,119	78,127
Depreciation & Amortization	5,949	6,473	11,826	12,888
Interest	8,289	20,690	21,538	36,151
Income (loss) before income taxes	$ (30,390)	$ (39,837)	$ (57,448)	$ (76,461)