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Stock Based Compensation Plan (Tables) | 3 Months Ended
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Mar. 31, 2022
Stock Based Compensation Plan |
Summary of stock options activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2022
​ | ​ | ​ | ​ | Weighted Average | ​ | Aggregate Intrinsic
​ |  | Shares |  | Exercise Price |  | Value
Outstanding at beginning of period |  | 534,236 | ​ | $ | 10.45 |  | ​ |
Granted |  | — | ​ |  | — |  | ​ |
Exercised |  | (206,472) | ​ |  | 9.16 |  | ​ |
Forfeited or expired |  | (3,091) | ​ |  | 8.25 |  | ​ |
Outstanding at end of period |  | 324,673 | ​ |  | 11.30 | ​ | $ | 3,442,730
Exercisable at end of period |  | 324,673 | ​ | $ | 11.30 | ​ | $ | 3,442,730
Summary of stock options outstanding and exercisable | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, 2022
​ | ​ | Options Outstanding | ​ | Options Exercisable
​ | ​ | ​ | ​ | Weighted Average | ​ | ​ | ​ | Weighted Average
​ | ​ | ​ | ​ | Remaining | ​ | ​ | ​ | Remaining
​ | ​ | Number | ​ | Contractual Life | ​ | Number | ​ | Contractual Life
Exercise Prices |  | Outstanding |  | in Years |  | Exercisable |  | in Years
$0.00 - $11.00 |  | 41,624 |  | 0.29 |  | 41,624 |  | 0.29
$11.01 - $12.00 |  | 266,987 |  | 2.65 |  | 266,987 |  | 2.65
$12.01 - $16.00 |  | 1,062 |  | 2.73 |  | 1,062 |  | 2.73
$16.01 - $18.16 |  | 15,000 |  | 6.08 |  | 15,000 |  | 6.08
Total |  | 324,673 |  | 2.51 |  | 324,673 |  | 2.51
Summary of restricted stock awards | The table below provides a summary of the restricted stock awards granted under the 2015 plan for the three months ended March 31, 2022. ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2022
​ | ​ | ​ | ​ | Weighted Average
​ |  | Shares |  | Grant Date Fair Value
Nonvested at January 1, 2022 |  | 75,826 | ​ | $ | 17.25
Granted |  | — | ​ |  | —
Vested |  | (13,960) | ​ |  | 16.78
Forfeited |  | (1,500) | ​ |  | 16.45
Nonvested at March 31, 2022 |  | 60,366 | ​ | ​ | 17.38

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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