Annual report pursuant to Section 13 and 15(d)

Property and Equipment (Details)

v2.4.1.9
Property and Equipment (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]      
Property and Equipment, Gross $ 95,732,000us-gaap_PropertyPlantAndEquipmentGross $ 93,932,000us-gaap_PropertyPlantAndEquipmentGross  
Less accumulated depreciation and amortization (42,821,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (36,194,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment  
Total property and equipment, Net 52,911,000us-gaap_PropertyPlantAndEquipmentNet 57,738,000us-gaap_PropertyPlantAndEquipmentNet  
Depreciation and amortization 7,900,000us-gaap_Depreciation 9,000,000us-gaap_Depreciation 9,200,000us-gaap_Depreciation
Building and Building Improvements [Member]      
Property, Plant and Equipment [Line Items]      
Property and Equipment, Gross 45,825,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember 		45,418,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember 		 
Computer Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property and Equipment, Gross 25,327,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember 		24,933,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember 		 
Furniture, Fixtures, Equipment and Other [Member]      
Property, Plant and Equipment [Line Items]      
Property and Equipment, Gross 17,603,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember 		16,604,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember 		 
Leasehold Improvements [Member]      
Property, Plant and Equipment [Line Items]      
Property and Equipment, Gross 3,567,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember 		3,567,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember 		 
Land and Land Improvements [Member]      
Property, Plant and Equipment [Line Items]      
Property and Equipment, Gross $ 3,410,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandAndLandImprovementsMember 		$ 3,410,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandAndLandImprovementsMember