Property, Plant and Equipment (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 35,925	$ 35,802
Accumulated depreciation	(24,236)	(26,168)
Total property, plant and equipment, net	11,689	9,634
Automobiles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 139	23
Automobiles | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	5 years
Automobiles | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	6 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,140	2,144
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	5 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	20 years
Computer software and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 23,381	25,397
Computer software and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	3 years
Computer software and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	7 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,484	6,709
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	5 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,196	1,108
Estimated Useful Life (in years)	5 years
Work in Progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,585	$ 421