Business Segment, Geographic and Major Customer Information - Assets by Reportable Segments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information
Total assets	$ 86,210	$ 230,600
Operating Segments | Chemistry Technologies
Segment Reporting Information
Total assets	43,346	116,110
Operating Segments | Data Analytics
Segment Reporting Information
Total assets	13,201	0
Corporate and Other
Segment Reporting Information
Total assets	$ 29,663	$ 114,490