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Leases (Tables)
 12 Months Ended
Dec. 31, 2021
Leases [Abstract]  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
The table below presents the lease-related assets and liabilities recorded on the consolidated balance sheet (in millions).
December 31, 2021Classification on the Balance Sheet
Lease assets$2.1 Other long-term assets
Lease liabilities:
Current
$0.9 Accounts payable and accrued liabilities
Non-current3.0 Other long-term liabilities
Total lease liabilities
$3.9 
The table below reconciles undiscounted payments for operating leases with terms greater than 12 months to the operating lease liabilities recorded on the balance sheet (in millions).
2022$1.3 
20231.0 
20241.0 
20251.0 
20261.0 
Thereafter0.8 
Total lease payments6.1 
Less imputed interest2.2 
Present value of lease payments$3.9