Share-Based Compensation - Schedule of Compensation Cost for Cash-settled Restricted Stock (Details) - Cash-settled Restricted Stock - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total expense before income taxes	$ 1,503	$ 610	$ 3,533	$ 2,227
Income tax benefit	(159)	(51)	(346)	(210)
Total expense after income taxes	1,344	559	3,187	2,017
Cost of goods sold
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total expense before income taxes	336	102	836	515
Selling, general and administrative expenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total expense before income taxes	$ 1,167	$ 508	$ 2,697	$ 1,712