Share-Based Compensation Expense - Schedule of stock option award activity (Details) - $ / shares	3 Months Ended	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Shares
Outstanding, beginning balance (in shares)	488,385	193,156	193,156
Granted (in shares)	0	0
Exercised (in shares)	0	0
Cancelled or forfeited (in shares)	0	0
Outstanding, ending balance (in shares)	488,385	193,156	488,385	193,156
Exercisable (in shares)	192,985	191,931
Weighted Average Exercise Price
Outstanding, beginning balance (in usd per share)	$ 9.34	$ 17.89	$ 17.89
Granted (in usd per share)	0	0
Exercised (in usd per share)	0	0
Cancelled or forfeited (in usd per share)	0	0
Outstanding, ending balance (in usd per share)	9.34	17.89	$ 9.34	$ 17.89
Exercisable (in usd per share)	$ 17.86	$ 17.58
Weighted Average Remaining Contractual Term
Outstanding, Weighted average remaining contractual term	7 years 3 months 18 days	5 years 6 months	7 years 6 months	5 years 9 months 18 days
Exercisable at March 31, 2025	4 years 6 months	5 years 6 months

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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