Discontinued Operations - Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Costs and expenses:
Loss before income taxes	$ (980)	$ 0	$ (23,827)	$ 0
Loss from discontinued operations, net of taxes	(1,260)	(2,918)	(26,408)	(7,058)
API | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue:	0	28,488	6,388	59,728
Costs and expenses:
Cost of goods sold	0	26,381	6,085	54,675
Selling, general and administrative expenses	280	4,916	2,499	10,957
Other expenses, net	0	189	385	1,275
Total costs and expenses	280	31,486	8,969	66,907
Loss before income taxes	(280)	(2,998)	(2,581)	(7,179)
Income tax benefit	0	80	0	121
Loss from discontinued operations, net of taxes	$ (280)	$ (2,918)	$ (2,581)	$ (7,058)