Property and Equipment (Details) - Components of Property and equipment (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 16,805	$ 16,995
Less accumulated depreciation	(15,346)	(14,995)
Property and equipment, Net	1,459	2,000
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	715	855
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	2,360	2,357
Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	1,460	1,477
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	12,233	12,269
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 37	$ 37