Net Loss Per Share (Reconciliation of Shares Used in Calculating Basic and Diluted Earnings Per Share) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Basic (in shares)	58,648,195	55,954,158	57,982,648	55,964,568
Effect of assumed exercised options (in shares)	0	0	0	0
Diluted (in shares)	58,648,195	55,954,158	57,982,648	55,964,568