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Property and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 144,636us-gaap_PropertyPlantAndEquipmentGross $ 124,336us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation (30,674)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (25,707)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property and equipment, net 113,962us-gaap_PropertyPlantAndEquipmentNet 98,629us-gaap_PropertyPlantAndEquipmentNet
Equipment    
Property, Plant and Equipment [Line Items]    
Total property and equipment 24,113us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_PropertyPlantAndEquipmentMember
20,582us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_PropertyPlantAndEquipmentMember
Buildings and land    
Property, Plant and Equipment [Line Items]    
Total property and equipment 87,818us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandAndBuildingMember
79,185us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandAndBuildingMember
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Total property and equipment 25,428us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdsAndLeaseholdImprovementsMember
18,410us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdsAndLeaseholdImprovementsMember
Furniture    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 7,277us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
$ 6,159us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember