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Right-of-Use Assets and Liabilities (Tables)
 6 Months Ended
Jun. 30, 2022
Leases [Abstract]  
Components of Lease Expense
The components of lease expense were as follows:
 Three Months Ended
June 30,		Six Months Ended
June 30,
(dollars in millions)2022202120222021
Operating lease cost$0.5 $0.3 $1.1 $0.7 
Schedule of Supplemental Cash Flow Information Related to Leases
Supplemental cash flow information related to leases was as follows:
Six Months Ended
June 30,
(dollars in millions)20222021
Cash paid for amounts included in the measurement of lease liabilities:  
Operating cash flows from operating leases$1.0 $0.6 
Supplemental non-cash information:
Right-of-use assets obtained in exchange for new lease obligations$2.4 $3.2 
Schedule of Maturities of Lease Liabilities
Maturities of lease liabilities for operating leases as of June 30, 2022, are as follows:
(dollars in millions)
Remainder of 2022$0.8 
20232.1 
20242.1 
20250.5 
2026— 
Total lease payments5.5 
Less: imputed interest(0.2)
Total$5.3