Business Segment, Geographic and Major Customer Information - Major Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information
Revenue from external customers	$ 10,382	$ 11,770
Customer Concentration Risk | Sales | Customer A | Chemistry Technologies
Segment Reporting Information
Revenue from external customers	$ 0	$ 3,029
Percentage of revenue by major customers (in percentage)	0.00%	25.70%
Customer Concentration Risk | Sales | Customer B | Chemistry Technologies
Segment Reporting Information
Revenue from external customers	$ 2,607	$ 2,849
Percentage of revenue by major customers (in percentage)	20.20%	24.20%
Customer Concentration Risk | Sales | Customer C (Related Party) | Chemistry Technologies
Segment Reporting Information
Revenue from external customers	$ 1,389
Percentage of revenue by major customers (in percentage)	10.80%