XML 156 R38.htm IDEA: XBRL DOCUMENT v3.21.2
Leases - Components of Lease Expense (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Operating lease cost:        
Amortization of right-of-use assets $ 1.5 $ 1.0 $ 2.8 $ 2.1
Interest on lease liabilities 0.3 0.3 0.7 0.6
Total operating lease cost $ 1.8 $ 1.3 $ 3.5 $ 2.7