Impairment Loss (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Impairment loss		$ 0	$ 0	$ 3,558
Loss on contract termination	$ 200
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Impairment loss	1,500
In Process Research and Development [Member]
Property, Plant and Equipment [Line Items]
Impairment loss	1,600	$ 0
Other Intangible Assets [Member]
Property, Plant and Equipment [Line Items]
Impairment loss	300
Project Stella [Member]
Property, Plant and Equipment [Line Items]
Impairment loss	$ 3,400