The following table presents a summary of the activity under the 2010, 2020 and 2021 Stock Incentive Plans for the years ended December 31: (Details) - $ / shares	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Outstanding, beginning	202,344	86,097	102,760
Outstanding, beginning	$ 14.89	$ 12.92	$ 11.86
Granted	115,750	145,750	6,250
Granted	$ 20.15	$ 15.31	$ 18.92
Exercised	(22,305)	(19,298)	(22,163)
Exercised	$ 10.64	$ 9.39	$ 8.81
Forfeited	(22,042)	(10,205)	(750)
Forfeited	$ 15.07	$ 15.19	$ 18.92
Outstanding, ending	273,747	202,344	86,097
Outstanding, ending	$ 17.50	$ 14.89	$ 12.92
Exercisable at year end	7,804	21,113	27,459
Exercisable at year end	$ 12.17	$ 9.77	$ 9.03

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

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

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

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