Property, Plant And Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	$ 42,310	$ 41,679
Less: accumulated depreciation and amortization	34,349	30,941
Net Property, Plant and Equipment	7,961	10,738
Building
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	285	280
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	5,541	5,420
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	10,174	9,828
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	$ 26,310	$ 26,151