Financial Information by Segment - Schedule of Income from Operations before Income Taxes and Finance Costs, Corporate and Other (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Restructuring expenses/(income)	$ 0	$ 89
Long Term Incentive Plan	(1,139)	3,553
Corporate
Segment Reporting Information [Line Items]
Restructuring expenses/(income)	0	89
Consulting fees related to Company strategy	0	916
Long Term Incentive Plan	(1,139)	3,553
EPA-related expense	2,589	718
Other non-operating	873	360
Expense from operations before income taxes and finance costs	$ 2,323	$ 5,636