XML 42 R31.htm IDEA: XBRL DOCUMENT v3.20.2
Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
1 Months Ended
Sep. 20, 2020
Aug. 29, 2020
Subsequent Event [Line Items]    
Lessee, Operating Lease, Lease Not Yet Commenced, Undiscounted Amount   $ 5.7
Subsequent Event [Member]    
Subsequent Event [Line Items]    
Proceeds from sale of McCook, IL building $ 25.1  
Sale Leaseback Transaction, Carrying Value 4.3  
Sale and Leaseback Transaction, Net gain on sale 14.8  
Lessee, Operating Lease, Lease Not Yet Commenced, Undiscounted Amount $ 8.2