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Acquisitions (Details 4) - USD ($)
$ in Thousands
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]      
Goodwill $ 52,641 $ 43,374 $ 43,987
Robust [Member]      
Restructuring Cost and Reserve [Line Items]      
Inventory and accounts receivable 500    
Equipment, furniture and fixtures 356    
Definite-lived intangibles 4,931    
Goodwill 5,326    
Accounts payable (1,482)    
Notes payable (963)    
Deferred tax liability (1,726)    
Noncontrolling interest (3,392)    
Net assets $ 3,550