Segments - Supplemental revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segments
Net Sales	$ 252,014	$ 271,011	$ 527,709	$ 525,358
Products
Segments
Net Sales	219,014	242,857	466,764	472,891
Services
Segments
Net Sales	33,000	28,154	60,945	52,467
United States
Segments
Net Sales	250,285	269,051	523,812	521,940
United States | Products
Segments
Net Sales	217,285	240,897	462,867	469,473
United States | Services
Segments
Net Sales	33,000	28,154	60,945	52,467
Foreign
Segments
Net Sales	1,729	1,960	3,897	3,418
Foreign | Products
Segments
Net Sales	1,729	1,960	3,897	3,418
Foreign | Services
Segments
Net Sales	$ 0	$ 0	$ 0	$ 0