Business Segments - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment	2
Total identifiable assets	$ 52,108	$ 49,470
Operating Segments | ATG
Segment Reporting Information [Line Items]
Total identifiable assets	42,579	39,980
Operating Segments | CPG
Segment Reporting Information [Line Items]
Total identifiable assets	$ 9,529	$ 9,490