Description of the business and summary of significant accounting policies: - Basic and diluted net income per common share (Details) - shares	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Diluted weighted average shares
Weighted-average number of common shares - basic	47,627,873	47,373,361	46,875,992
Weighted-average common shares -diluted	47,627,873	47,837,512	47,207,298
Anti-dilutive effects
Unvested shares of restricted common stock	1,489,277	1,261,623	1,164,021
Employee Stock Option
Diluted weighted average shares
Dilutive effect		15,380	16,064
Anti-dilutive effects
Anti-dilutive	149,908	118,985	105,556
Restricted stock
Diluted weighted average shares
Dilutive effect		448,771	315,242
Anti-dilutive effects
Anti-dilutive	704,070	11,365	541,608

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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