Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Additional Information (Details)

v3.20.2
Subsequent Events - Additional Information (Details)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Dec. 02, 2020
$ / shares
Oct. 30, 2020
USD ($)
a
Nov. 30, 2020
shares
Nov. 30, 2017
shares
Sep. 30, 2020
$ / shares
Sep. 30, 2019
$ / shares
Sep. 30, 2018
$ / shares
shares
Subsequent Event [Line Items]              
Cash dividends declared per common share | $ / shares         $ 0.36 $ 0.24 $ 0.24
Restricted Stock              
Subsequent Event [Line Items]              
Number of restricted shares awarded | shares       5,000     5,000
Subsequent Event              
Subsequent Event [Line Items]              
Cash dividends declared per common share | $ / shares $ 0.18            
Acres Of Land Purchased | a   3,280          
Like-kind asset purchased | $   $ 16.5          
Subsequent Event | Restricted Stock | 2015 Option Grants              
Subsequent Event [Line Items]              
Number of restricted shares awarded | shares     5,885