Equity Transactions and Stock-Based Compensation Plans (Schedule of Nonvested Stock Option Activity) (Details)	12 Months Ended
	Dec. 31, 2018 $ / shares shares
Number of Shares [Abstract]
Nonvested Options, Outstanding, Number, Beginning | shares	981,447
Nonvested Options, Vested in Period, Number | shares	(500,662)
Nonvested Options, Outstanding, Number, Ending | shares	480,785
Weighted-Average Price Per Share [Abstract]
Nonvested Stock Options Outstanding, Weighted Average Grant Date Price, Beginning | $ / shares	$ 1.91
Nonvested Options, Vested in Period, Weighted Average Grant Date Price | $ / shares	1.76
Nonvested Stock Options Outstanding, Weighted Average Grant Date Price, Ending | $ / shares	$ 2.07