Summary of Significant Accounting Policies - Summary of New Revenue Recognition Standard on Consolidated Financial Statements (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net sales	$ 1,057,729	$ 1,150,405	$ 1,239,856	$ 1,120,517	$ 1,120,432	$ 1,128,775	$ 1,174,090	$ 1,137,285	$ 4,568,507	$ 4,560,582	$ 4,923,621
Cost of sales									2,880,223	2,792,779	2,894,371
Operating income	49,329	132,225	164,688	103,726	90,250	125,428	136,389	119,972	449,968	472,039	567,639
Income tax expense									30,495	15,968	49,731
Net income	(23,283)	$ 63,843	$ 65,922	$ 33,735	53,581	$ 51,157	$ 55,464	$ 33,562	140,217	193,764	$ 222,838
Assets
Accounts receivable, less allowance for doubtful accounts	810,359				898,829				810,359	898,829
Inventories, net	473,327				444,941				473,327	444,941
Liabilities:
Other accrued liabilities	291,385				286,980				291,385	286,980
Stockholders' equity:
Retained earnings (accumulated deficit)	(249,777)				$ (395,998)				(249,777)	$ (395,998)
Amounts Without Adoption of ASU No. 2014-09 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net sales									4,572,634
Cost of sales									2,881,920
Operating income									452,398
Income tax expense									31,117
Net income									142,025
Assets
Accounts receivable, less allowance for doubtful accounts	808,381								808,381
Inventories, net	475,008								475,008
Liabilities:
Other accrued liabilities	292,693								292,693
Stockholders' equity:
Retained earnings (accumulated deficit)	(251,382)								(251,382)
ASU No. 2014-09 [Member] | Effect of Change Increase / (Decrease) [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net sales									(4,127)
Cost of sales									(1,697)
Operating income									(2,430)
Income tax expense									(622)
Net income									(1,808)
Assets
Accounts receivable, less allowance for doubtful accounts	1,978								1,978
Inventories, net	(1,681)								(1,681)
Liabilities:
Other accrued liabilities	(1,308)								(1,308)
Stockholders' equity:
Retained earnings (accumulated deficit)	$ 1,605								$ 1,605