Restructuring and Reorganization Charges (Details Textual) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Employees	Sep. 30, 2015 USD ($)
Restructuring Cost And Reserve [Line Items]
Restructuring and reorganization charges recorded during the period	$ (185)		$ 846	$ (601)	$ 1,822
Reduced workforce | Employees				60
Gain on disposition of business operations				$ 6,611	$ (767)
Cyber Security Business
Restructuring Cost And Reserve [Line Items]
Gain on disposition of business operations		$ 6,600
Employee Severance
Restructuring Cost And Reserve [Line Items]
Restructuring and reorganization charges recorded during the period				$ 6,500