Intangibles Assets and Goodwill - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill
Beginning of Year Balance	$ 359,771	$ 708,258
Reductions		(348,557)
Currency Translation Adjustments	(891)	70
End of Year Balance	358,880	359,771	$ 708,258
Accumulated impairment losses	560,900		212,300
Impairment of goodwill and other intangible assets		349,600	48,100
ITPS
Goodwill
Beginning of Year Balance	254,120	571,575
Reductions		(317,525)
Currency Translation Adjustments	(891)	70
End of Year Balance	253,229	254,120	571,575
HS
Goodwill
Beginning of Year Balance	86,786	86,786
End of Year Balance	86,786	86,786	86,786
LLPS
Goodwill
Beginning of Year Balance	18,865	49,897
Reductions		(31,032)
End of Year Balance	$ 18,865	$ 18,865	$ 49,897