Earnings Per Share	12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings Per Share	14.EARNINGS PER SHAREBasic earnings per share (EPS) is computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS is computed in the same manner as basic EPS but also reflects the potential dilution that could occur from the grant of stock-based compensation awards. The Company maintains two active share-based compensation plans that may generate additional potentially dilutive common shares. For granted and unexercised stock-settled stock appreciation rights (SSARs), dilution would occur if Company-issued SSARs were exercised and converted into common stock. As of the years ended December 31, 2021, 2020 and 2019, there were 28,770, 24,644 and 32,091 potentially dilutive shares related to issued and unexercised SSARs. The calculation did not include 11,073 unexercised SSARs that could potentially dilute earnings per share but their effect was antidilutive as of December 31, 2021. For restricted stock, dilution would occur from the Company’s previously granted but unvested shares. There were 12,705, 5,496 and 10,720 potentially dilutive shares related to unvested restricted share grants as of the years ended December 31, 2021, 2020 and 2019, respectively. In the computation of diluted EPS, the Company uses the treasury stock method to determine the dilutive effect of its granted but unexercised stock options and SSARs and unvested restricted stock. Under the treasury stock method, the assumed proceeds, as defined, received from shares issued in a hypothetical stock option exercise or restricted stock grant, are assumed to be used to purchase treasury stock. Proceeds include amounts received from the exercise of outstanding stock options and compensation cost for future service that the Company has not yet recognized in earnings. The Company does not consider awards from share-based grants in the computation of basic EPS.The following table illustrates the data used in computing basic and diluted EPS for the years indicated: 2021 2020 2019(dollars in thousands except per share data) Basic EPS: Net income available to common shareholders$ 24,008 $ 13,035 $ 11,576Weighted-average common shares outstanding 5,321,687 4,586,224 3,779,582Basic EPS$ 4.51 $ 2.84 $ 3.06 Diluted EPS: Net income available to common shareholders$ 24,008 $ 13,035 $ 11,576Weighted-average common shares outstanding 5,321,687 4,586,224 3,779,582Potentially dilutive common shares 41,475 30,140 42,811Weighted-average common and potentially dilutive shares outstanding 5,363,162 4,616,364 3,822,393Diluted EPS$ 4.48 $ 2.82 $ 3.03

Earnings Per Share

12 Months Ended

Dec. 31, 2021

14.EARNINGS PER SHAREBasic earnings per share (EPS) is computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS is computed in the same manner as basic EPS but also reflects the potential dilution that could occur from the grant of stock-based compensation awards. The Company maintains two active share-based compensation plans that may generate additional potentially dilutive common shares. For granted and unexercised stock-settled stock appreciation rights (SSARs), dilution would occur if Company-issued SSARs were exercised and converted into common stock. As of the years ended December 31, 2021, 2020 and 2019, there were 28,770, 24,644 and 32,091 potentially dilutive shares related to issued and unexercised SSARs. The calculation did not include 11,073 unexercised SSARs that could potentially dilute earnings per share but their effect was antidilutive as of December 31, 2021. For restricted stock, dilution would occur from the Company’s previously granted but unvested shares. There were 12,705, 5,496 and 10,720 potentially dilutive shares related to unvested restricted share grants as of the years ended December 31, 2021, 2020 and 2019, respectively. In the computation of diluted EPS, the Company uses the treasury stock method to determine the dilutive effect of its granted but unexercised stock options and SSARs and unvested restricted stock. Under the treasury stock method, the assumed proceeds, as defined, received from shares issued in a hypothetical stock option exercise or restricted stock grant, are assumed to be used to purchase treasury stock. Proceeds include amounts received from the exercise of outstanding stock options and compensation cost for future service that the Company has not yet recognized in earnings. The Company does not consider awards from share-based grants in the computation of basic EPS.The following table illustrates the data used in computing basic and diluted EPS for the years indicated: 2021 2020 2019(dollars in thousands except per share data) Basic EPS: Net income available to common shareholders$ 24,008 $ 13,035 $ 11,576Weighted-average common shares outstanding 5,321,687 4,586,224 3,779,582Basic EPS$ 4.51 $ 2.84 $ 3.06 Diluted EPS: Net income available to common shareholders$ 24,008 $ 13,035 $ 11,576Weighted-average common shares outstanding 5,321,687 4,586,224 3,779,582Potentially dilutive common shares 41,475 30,140 42,811Weighted-average common and potentially dilutive shares outstanding 5,363,162 4,616,364 3,822,393Diluted EPS$ 4.48 $ 2.82 $ 3.03