Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended			36 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 2015	Dec. 31, 2022
State and local incentives received			$ 1,410	$ 15,733
Deferred liability balance	$ 7,496
Contingency losses		$ 7,500
Settlement payments		$ 3,500
Settlement payment term	3 years
Maximum [Member]
Incentive term	6 years
Scenario, Forecast [Member]
Settlement payments					$ 4,000