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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Stock-Based Compensation [Abstract] |
Schedule of Stock-Based Compensation | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For Three Months Ended | ​ | For Nine Months Ended | ​
​ | ​ | September 30, | ​ | September 30, | ​
(Dollars in thousands) |  | 2021 |  | 2020 |  | 2021 |  | 2020 |
Stock-based compensation expense | ​ | $ | 91 | ​ | $ | 67 | ​ | $ | 287 | ​ | $ | 190 | ​
Excess tax benefits related to stock-based compensation | ​ |  | 2 | ​ |  | — | ​ |  | 3 | ​ |  | 11 | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​
(Dollars in thousands) |  | 2021 |  | 2020 |
Unrecognized stock-based compensation expense | ​ | $ | 120 | ​ | $ | 143 | ​
Weighted average period unrecognized expense is expected to be recognized | ​ |  | 0.3 | years |  | 0.5 | years
Schedule of Share-based Compensation, Restricted Stock and Units Award Activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30, 2021
​ | ​ | ​ | ​ | Weighted Average
​ | ​ | Number of | ​ | Grant Date
​ |  | Shares |  | Fair Value
Nonvested at beginning of period |  | 24,505 | ​ | $ | 13.78
Granted |  | 24,583 | ​ |  | 13.34
Vested |  | (18,040) | ​ |  | 13.74
Forfeited |  | (1,423) | ​ |  | 13.34
Nonvested at end of period |  | 29,625 | ​ | $ | 13.38
Schedule of Share-based Compensation, Stock Options Activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30, 2021
​ | ​ | ​ | ​ | Weighted Average
​ | ​ | Number of | ​ | Grant Date
​ |  | Shares |  | Exercise Price
Outstanding at beginning of period |  | 2,709 | ​ | $ | 6.64
Granted |  | — | ​ |  | —
Exercised |  | (2,009) | ​ |  | 6.64
Expired/Cancelled |  | (700) | ​ |  | 6.64
Outstanding at end of period |  | — | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​
Exercisable at end of period |  | — | ​ | $ | —

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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 (c)(1) -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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