Income Taxes (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Amount		$ 0	$ 16,500,000	$ 315,900,000
Tax Cuts and Jobs Act of 2017, change in tax rate, income tax expense (benefit)				$ 371,400,000
Effective Income Tax Rate Reconciliation, Percent		26.40%	17.50%	(113.70%)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	$ 17,900,000	$ 0	$ 9,400,000	$ (371,400,000)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent		28.00%	26.70%	31.20%
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount		$ 0	$ 1,400,000	$ 0
State deferred tax rate change impact		0	0	5,000,000.0
Provision for Income Taxes, Equity Method Investment		(18,000,000.0)	(10,800,000)	(12,000,000.0)
Amount of U.S. federal tax net operating loss		0.80
Alternative minimum tax credit	3,400,000	1,700,000	3,400,000
State net operating loss	26,400,000	31,100,000	26,400,000
State net operating loss carryforwards valuation allowance	12,600,000	12,900,000	12,600,000
Foreign net operating loss	$ 2,100,000	2,200,000	2,100,000
Tax Cuts and Jobs Act of 2017, transition tax for accumulated roreign earnings, income tax expense (benefit)			$ 23,100,000	57,200,000
Tax Cuts and Jobs Act of 2017, change in tax rate, deferred tax liability, income tax (expense) Benefit				$ 5,000,000.0
Foreign [Member]
Operating Loss Carryforwards [Line Items]
Amount of U.S. federal tax net operating loss		2,200,000
Unrecognized Tax Benefits		1,600,000
Canada Revenue Agency [Member]
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount		$ (2,800,000)