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Accounting Pronouncements and Significant Accounting Policies
 3 Months Ended
Mar. 31, 2023
Accounting Policies [Abstract]  
Accounting Pronouncements and Significant Accounting Policies Accounting Pronouncements and Significant Accounting Policies
Accounting Pronouncements
The Company reviews new accounting standards as issued. As of March 31, 2023, the Company has not identified any new standards that it believes will have a material impact on the Company’s financial statements.
Significant Accounting Policies
There were no changes to the Company’s significant accounting policies during the three months ended March 31, 2023.
Cash, Cash Equivalents and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported withing the condensed consolidated balance sheets to the total amounts shown in the consolidated statements of cash flows for the three months ended March 31, 2023 and 2022:
(dollars in millions)March 31,
2023		March 31,
2022
Cash and cash equivalents$130.2 $62.3 
Restricted cash5.5 4.5 
Cash, cash equivalents and restricted cash$135.7 $66.8 
Restricted cash represents a letter of credit collateralized by a certificate of deposit in the same amount as required under the terms of the Company's laboratory and office space lease entered into in May 2021 and amended in August 2022.