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Stock-Based Compensation Plans - Stock Options Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Number of option shares
Outstanding, beginning of period (in shares)	487,250	319,650
Granted (in shares)	190,450	192,750
Exercised (in shares)	0	0
Forfeited/cancelled (in shares)	(36,100)	(25,150)
Outstanding, end of period (in shares)	641,600	487,250	319,650
Weighted- average exercise price
Outstanding, beginning of period (in USD per share)	$ 2.65	$ 3.00
Granted (in USD per share)	1.80	2.06
Exercised (in USD per share)	0	0
Forfeited/cancelled (in USD per share)	2.25	2.55
Outstanding, end of period (in USD per share)	$ 2.42	$ 2.65	$ 3.00
Weighted-average remaining contractual term	5 years	5 years 7 months 2 days	6 years 1 month 24 days

X

- Definition

For presentations that combine terminations, 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 or that expired.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Weighted average price of options that were either forfeited or expired.

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
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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
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-Section 50
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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 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 option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Number of share options (or share units) exercised during the current period.

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