Net Loss Per Share (Reconciliation of Shares Used in Calculating Basic and Diluted Earnings Per Share) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Basic (in shares)	60,014,246	56,524,990	58,667,289	56,153,428
Effect of assumed exercised options (in shares)	0	0	0	0
Diluted (in shares)	60,014,246	56,524,990	58,667,289	56,153,428