Stock-Based Compensation (Non-Vested Employee Stock Options) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option Shares, Granted	0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option Shares, Nonvested at beginning of period	335,000	682,500	1,023,750
Option Shares, Granted	0	0	0
Option Shares, Vested	(331,250)	(335,000)	(341,250)
Option Shares, Forfeited	(3,750)	(12,500)	0
Option Shares, Nonvested at end of period	0	335,000	682,500
Nonvested, Weighted Average Grant Date Fair Value beginning of period	$ 2.55	$ 2.55	$ 2.62
Granted, Weighted Average Grant Date Fair Value	0.00	0.00	0.00
Vested, Weighted Average Grant Date Fair Value	2.55	2.55	2.55
Forfeited, Weighted Average Grant Date Fair Value	2.55	2.55	0.00
Nonvested, Weighted Average Grant Date Fair Value end of period	$ 0.00	$ 2.55	$ 2.55