Income Taxes Reconciliation of Statutory Federal Income Tax Rate and Effective Tax Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal income taxes statutory rate(1)	21.00%	21.00%		35.00%
Operating Loss Carryforwards		$ 75.7
Alternative minimum tax	$ 37.1	126.0
Deferred Tax Assets, Tax Credit Carryforwards		$ 50.3
Increase (decrease) in rate as a result of:
State income taxes, net of federal income tax benefit	(2.50%)	4.10%	[1]	44.30%
Federal rate change(1)	0.00%	0.00%		741.30%
State rate change(2)	20.90%	(2.90%)		2.10%
Valuation allowance (3)	(18.00%)	(1.90%)		(84.40%)
Permanent adjustments(4)	(7.10%)	(0.10%)		(0.40%)
Return to provision adjustment	2.70%	(0.10%)		(0.70%)
Uncertain tax provision(5)	13.60%	0.00%		(7.70%)
AMT Credit Reclass due to NOL Carryback(6)	0.00%	3.80%		(1.80%)
Effective income tax rate	30.60%	23.90%		727.70%

[1] The Tax Legislation changed the federal corporate income tax rate from 35% to 21% starting in 2018. The rate change caused the Company to revalue its deferred tax liabilities and assets as of December 31, 2017 from a 35% to 21% federal corporate income tax rate which caused the majority of the change in rate.