Income Taxes Unrecognized Tax Benefits (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Unrecognized tax benefit — Permanent tax positions	$ 7,800,000	$ 7,400,000
Unrecognized tax benefit — Temporary tax positions	4,600,000	4,600,000
Total unrecognized tax benefit	12,400,000	12,000,000.0
NOL and tax credit carryforwards	8,700,000	8,300,000
Net Deferred Tax Liability associated with the Unrecognized Tax Benefit Amounts and Related NOLs and Tax Credit Carryforwards	(5,400,000)	(5,000,000.0)
Decrease in Unrecognized Tax Benefits is Reasonably Possible	8,700,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	(1,200,000)	(1,100,000)	$ (700,000)
Interest Expense (Income) related to unrecognized tax benefits	(100,000)	(400,000)
Unrecognized Tax Benefits, Income Tax Penalties Accrued	$ 0	$ 0