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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of unvested restricted stock awards | The following tables summarize the unvested restricted stock awards at December 31, 2020 and 2019.
|  | Years Ended December 31,
|  | 2020 |  | 2019
Performance Awards |  | Shares |  | Weighted- Average Grant Date Fair Value |  | Shares |  | Weighted- Average Grant Date Fair Value
Unvested at beginning |  | 58,780 |  |  | $ | 57.74 |  |  | 98,958 |  |  | $ | 54.76 |
Issued |  | 44,741 |  |  | 40.19 |  |  | 43,145 |  |  | 55.76 |
Forfeited |  | (8,586) |  |  | 54.89 |  |  | (65,589) |  |  | 55.25 |
Vested |  | (4,293) |  |  | 62.70 |  |  | (17,734) |  |  | 45.50 |
Unvested at end |  | 90,642 |  |  | $ | 49.11 |  |  | 58,780 |  |  | $ | 57.74 |
|  | Years Ended December 31,
|  | 2020 |  | 2019
Time Vested Awards |  | Shares |  | Weighted- Average Grant Date Fair Value |  | Shares |  | Weighted- Average Grant Date Fair Value
Unvested at beginning |  | 110,714 |  |  | $ | 57.84 |  |  | 173,721 |  |  | $ | 58.93 |
Issued |  | 176,252 |  |  | 42.51 |  |  | 112,636 |  |  | 55.76 |
Forfeited |  | (18,385) |  |  | 50.06 |  |  | (44,600) |  |  | 58.73 |
Vested |  | (50,550) |  |  | 58.76 |  |  | (131,043) |  |  | 57.20 |
Unvested at end |  | 218,031 |  |  | $ | 45.89 |  |  | 110,714 |  |  | $ | 57.84 |
Schedule of activity of stock options | Below is a summary of stock option activity for the twelve months ended December 31, 2020, 2019 and 2018. The information excludes restricted stock units and awards.
| Years Ended December 31,
| 2020 |  | 2019 |  | 2018
| Shares |  | Weighted- Average Exercise Price |  | Shares |  | Weighted- Average Exercise Price |  | Shares |  | Weighted- Average Exercise Price
Beginning balance | 6,589 |  |  | $ | 19.99 |  |  | 34,123 |  |  | $ | 14.69 |  |  | 143,224 |  |  | $ | 9.13 |
Issued | 2,500 |  |  | 47.95 |  |  | — |  |  | — |  |  | — |  |  | — |
Exercised | (3,300) |  |  | 11.40 |  |  | (26,784) |  |  | 12.42 |  |  | (108,201) |  |  | 7.17 |
Forfeited | — |  |  | — |  |  | (750) |  |  | 49.08 |  |  | (900) |  |  | 34 |
Ending balance | 5,789 |  |  | $ | 36.96 |  |  | 6,589 |  |  | $ | 19.99 |  |  | 34,123 |  |  | $ | 14.69 |
Schedule of stock option by exercise price range | The following summarizes information about stock options outstanding at December 31, 2020. The information excludes restricted stock units and awards.
Outstanding: |  | Stock Options Outstanding |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Life (Years)
Range of Exercise Prices |  |  |
$5.76 - |  | $10.72 |  | — |  |  | — |  |  | — |
$10.73 - |  | $11.40 |  | 1,789 |  |  | $ | 10.73 |  |  | 1.30
$11.41 - |  | $24.86 |  | — |  |  | — |  |  | — |
$24.87 - |  | $49.91 |  | 4,000 |  |  | 48.69 |  |  | 7.65
|  |  |  | 5,789 |  |  | $ | 36.96 |  |  | 5.69
Exercisable: |  | Stock Options Exercisable |  | Weighted-Average Exercise Price
Range of Exercise Prices |  |
$5.76 - |  | $10.72 |  | — |  |  | — |
$10.73 - |  | $11.40 |  | 1,789 |  |  | $ | 10.73 |
$11.41 - |  | $24.86 |  | — |  |  | — |
$24.87 - |  | $49.91 |  | 1,500 |  |  | 49.91 |
|  |  |  | 3,289 |  |  | $ | 28.60 |
Schedule of cash proceeds, tax benefits and intrinsic value related to total stock options exercised | The fair value of each stock option grant is estimated on the date of grant using the Black-Scholes option pricing model with the assumptions shown in the table below used for the grants during 2020.
|  | Year Ended December 31, 2020
Expected volatility |  | 42.3 | %
Weighted-Average volatility |  | 42.3 | %
Expected dividends |  | — |
Expected term (in years) |  | 6.5
Risk-free rate |  | 1.67 | %
Weighted-average fair value (grant date) |  | $ | 21.06 |
Cash proceeds, tax benefits and intrinsic value related to total stock options exercised is as follows:
|  | Years Ended December 31,
(dollars in thousands) |  | 2020 |  | 2019 |  | 2018
Proceeds from stock options exercised |  | $ | 63 |  |  | $ | 332 |  |  | $ | 776 |
Tax benefits realized from stock compensation |  | 24 |  |  | 50 |  |  | 5 |
Intrinsic value of stock options exercised |  | 91 |  |  | 1,022 |  |  | 4,958 |

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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 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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