Segment Information, Revenue and Enterprise-Wide Disclosures - Additional Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) Customer	Dec. 31, 2017 USD ($) Customer	Dec. 31, 2016 USD ($) Customer
Entity Wide Revenue Major Customer [Line Items]
Number of customer accounted for 10.0% or $120.0 million and $101.7 million of revenue									1	1
Percentage of net sales									100.00%	100.00%	100.00%
Concentration risk, revenue amount | $	$ 314,446	$ 320,946	$ 304,085	$ 274,512	$ 268,430	$ 285,247	$ 264,224	$ 236,303	$ 1,213,989	$ 1,054,204	$ 942,162
Number of customer did not account for 10% or greater of outstanding accounts receivable											0
Number of customer did not account for 10% or greater of revenue									0	0
Geographic Concentration Risk
Entity Wide Revenue Major Customer [Line Items]
Percentage of net sales									10.00%	10.00%
Concentration risk, revenue amount | $									$ 120,000	$ 101,700