Annual report pursuant to Section 13 and 15(d)

Investments (Details)

v3.5.0.2
Investments (Details) - USD ($)
$ in Millions
Sep. 30, 2016
Sep. 30, 2015
Sep. 16, 2015
Schedule of Equity Method Investments [Line Items]      
Equity method investment, difference between carrying value and underlying net assets $ 2.7    
Kingstone Holding Company      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage   15.00%  
Fair Value, Inputs, Level 2 | Kingstone Shanghai      
Schedule of Equity Method Investments [Line Items]      
Equity method investment, fair value $ 3.0 $ 2.7 $ 2.7
Kingstone | Kingstone Holding Company      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage     15.00%