Goodwill and Other Intangible Assets, net - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Intangible assets subject to amortization
Gross Carrying Amount	$ 132,720		$ 132,720
Accumulated Amortization	(35,001)		(31,254)
Net Book Value	97,719		101,466
Total intangible assets other than goodwill
Gross Carrying Amount	149,120		149,120
Net Book Value	114,119		117,866
Aggregate amortization expense of intangible assets	3,747	$ 3,526
Tradenames
Indefinite lived assets:
Net Book Value			16,400
Total intangible assets other than goodwill
Gross Carrying Amount	16,400		$ 16,400
Net Book Value	$ 16,400
Customer relationships
Intangible assets subject to amortization
Weighted average remaining lives	8 years 1 month 6 days		8 years 3 months 18 days
Gross Carrying Amount	$ 132,720		$ 132,720
Accumulated Amortization	(35,001)		(31,254)
Net Book Value	$ 97,719		$ 101,466