Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Letters of Credit (Details)

v3.10.0.1
Commitments and Contingencies - Letters of Credit (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Sep. 30, 2017
Line of Credit Facility [Line Items]    
Standby letters of credit $ 2,161  
Financial Standby Letter of Credit    
Line of Credit Facility [Line Items]    
Standby letters of credit $ 10,300 $ 10,300