Employee Benefits - Summary of Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 3,498	$ 2,733	$ 6,693	$ 5,415
Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	63	65	126	161
Selling
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	38	59	89	109
Administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 3,397	$ 2,609	$ 6,478	$ 5,145