Income Taxes (Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Statutory federal tax rate	21.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	(0.10%)	(0.50%)	0.00%
State income taxes, net of federal tax benefit	(0.20%)	(39.70%)	2.30%
effective tax rate reconciliation, non-deductible expense, warrant remeasurement, percent	(1.50%)	(485.00%)	4.00%
Effective Income Tax Rate Reconciliation, Deduction, Employee Stock Ownership Plan Dividend, Percent	0.80%	21.70%	3.40%
Tax effect of other non-deductible expenses	0.80%	(19.60%)	1.60%
Other	(0.60%)	3.50%	(0.60%)
Effective income tax rate	22.40%	432.60%	38.90%
2017 Tax Cuts and Jobs Act [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Statutory federal tax rate	0.00%	0.00%	0.00%
return to income tax provision adjustment [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Other	0.00%	0.00%	0.00%