Restructuring (Restructuring Expense) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0	$ (384,000)	$ 2,315,000	$ (384,000)
Severance and other associated costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(31,000)	0	368,000	0
Wind down cost legacy platform [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 31,000	$ (384,000)	$ 1,947,000	$ (384,000)