Debt - Schedule of Components of Long-term Debt (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019	Aug. 06, 2019	Dec. 31, 2016
Debt Instrument [Line Items]
Finance leases	$ 4,700,000	$ 5,300,000
Other debt	56,500,000	59,600,000
Total	577,200,000	579,400,000
Less – current maturities	530,100,000	13,500,000
Total long-term debt	$ 47,100,000	565,900,000
5.50% convertible senior notes due March 1, 2021
Debt Instrument [Line Items]
Face value				$ 1,000
Senior Notes | 10.75% senior notes
Debt Instrument [Line Items]
Interest rate	10.75%
Face value	$ 440,000,000	440,000,000
Unamortized discount and fees	4,900,000	5,500,000
Senior notes	$ 435,100,000	434,500,000
Senior Notes | 5.50% convertible senior notes due March 1, 2021
Debt Instrument [Line Items]
Interest rate	5.50%			5.50%
Face value	$ 84,200,000	84,200,000		$ 213,500,000
Unamortized discount and fees	3,300,000	4,200,000
Senior notes	$ 80,900,000	$ 80,000,000.0	$ 84,200,000