Summary of Significant Accounting Policies (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Summary of Significant Accounting Policies [Abstract]
Net income (loss)	$ 63	$ (2,992)	$ (7,083)	$ (7,261)
Income allocated to participating securities	9
Net income (loss) allocated to common shares	$ 54	$ (2,992)	$ (7,083)	$ (7,261)
Weighted average common shares outstanding - Basic	45,149,717	34,972,589	44,182,379	33,214,262
Dilutive effect of stock options	115,653
Weighted average common shares outstanding - Diluted	45,265,370	34,972,589	44,182,379	33,214,262
Net loss per share: Basic	$ 0.00	$ (0.09)	$ (0.16)	$ (0.22)
Net loss per share: Diluted	$ 0.00	$ (0.09)	$ (0.16)	$ (0.22)