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Summary of Accounting Pronouncements and Significant Accounting Policies | 6 Months Ended
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Jun. 30, 2025
Accounting Policies [Abstract] |
Summary of Accounting Pronouncements and Significant Accounting Policies | Summary of Accounting Pronouncements and Significant Accounting Policies Accounting Pronouncements Recently Adopted Accounting Pronouncements There have been no recently adopted accounting pronouncements that have had a material impact on the Company's unaudited condensed consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40) - In November 2024, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2024-03, "Disaggregation of Income Statement Expenses," which requires disclosures of certain disaggregated income statement expense captions into specified categories within the footnotes to the financial statements. The requirements of the ASU are effective for annual periods beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027, with early adoption permitted. The requirements will be applied prospectively with the option for retrospective application. The Company is currently evaluating the impact ASU No. 2024-03 will have on its condensed consolidated financial statements. Income Taxes (Topic 740) - In December 2023, the FASB issued ASU No. 2023-09, "Improvements to Income Tax Disclosures," which requires enhanced income tax disclosures, including specific categories and disaggregation of information in the effective tax rate reconciliation, disaggregated information related to income taxes paid, income or loss from continuing operations before income tax expense or benefit and income tax expense or benefit from continuing operations. The requirements of the ASU are effective for annual periods beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the impact ASU No. 2023-09 will have on its condensed consolidated financial statements. Significant Accounting Policies There were no changes to the Company’s significant accounting policies during the six months ended June 30, 2025. Cash, Cash Equivalents and Restricted Cash The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheets to the total amounts shown in the condensed consolidated statements of cash flows for the six months ended June 30, 2025 and 2024:
(dollars in millions) | June 30, 2025 |  | June 30, 2024
Cash and cash equivalents | $ | 114.9 |  |  | $ | 154.8 |
Restricted cash | — |  |  | 5.5 |
Cash, cash equivalents and restricted cash | $ | 114.9 |  |  | $ | 160.3 |
Restricted cash represents a letter of credit collateralized by a certificate of deposit in the same amount which was canceled in connection with a lease termination agreement the Company entered into with 101 College Street LLC in August 2024.

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- Definition The entire disclosure for all significant accounting policies of the reporting entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/235/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483426/235-10-50-1 + Details
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