Income Taxes (Tax Rate Reconciliation - Discontinued Operations) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Statutory federal tax rate	(35.00%)	(35.00%)	(35.00%)
State income taxes, net of federal tax benefit	1.30%	1.30%	1.30%
Effective income tax rate	36.30%	36.30%	36.30%
2017 Tax Cuts and Jobs Act [Member]
Operating Loss Carryforwards [Line Items]
Statutory federal tax rate	0.00%	0.00%	0.00%