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Commitments and Contingencies: | 12 Months Ended
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Dec. 31, 2022
Commitments and Contingencies: |
Commitments and Contingencies: | 12. Commitments and Contingencies: Employee Benefit Plan ​ The Company provides a 401(k) Savings Incentive Plan which covers substantially all employees. The plan provides for matching contributions and optional profit-sharing contributions at the discretion of the Board of Directors. Employee contributions are fully vested; matching and profit sharing contributions are subject to a five-year service vesting schedule. Company contributions to the plan for 2022, 2021 and 2020 were $397,700, $348,200 and $324,000, respectively. ​ Litigation From time to time, the Company is exposed to asserted and unasserted legal claims encountered in the normal course of business. Management believes that the ultimate resolution of these matters will not have a material adverse effect on the consolidated financial position or results of operations of the Company.

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