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Stock Based Compensation (Details) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) Officer $ / shares shares | Dec. 31, 2018 Officer $ / shares shares | May 02, 2016 shares
Stock-Based Compensation [Abstract] |  |  |  |
Number of retiring officers receiving accelerated vesting period | Officer |  | 1 | 1 |
LTIP [Member] |  |  |  |
Stock-Based Compensation [Abstract] |  |  |  |
Maximum number of shares of common stock that can be issued under the plan (in shares) |  |  |  | 100,000
Term of plan | 10 years |  |  |
Maximum number of shares of common stock subject to awards that may be granted to a participant per calendar year (in shares) | 2,000 |  |  |
LTIP [Member] | Restricted Stock [Member] |  |  |  |
Number of Shares [Roll Forward] |  |  |  |
Nonvested at beginning of the year (in shares) | 7,342 | 3,080 |  |
Granted (in shares) | 4,912 | 6,963 |  |
Vested (in shares) | (5,491) | (2,701) |  |
Forfeited (in shares) | (81) | 0 |  |
Nonvested at end of the year (in shares) | 6,682 | 7,342 | 3,080 |
Grant Date Weighted Average Fair Value [Abstract] |  |  |  |
Nonvested at beginning of the year (in dollars per share) | $ / shares | $ 33.57 | $ 33.85 |  |
Granted (in dollars per share) | $ / shares | 44.07 | 33.61 |  |
Vested (in dollars per share) | $ / shares | 36.00 | 33.99 |  |
Forfeited (in dollars per share) | $ / shares | 33.61 | 0 |  |
Nonvested at end of the year (in dollars per share) | $ / shares | $ 39.30 | $ 33.57 | $ 33.85 |
Stock-Based Compensation Expense [Abstract] |  |  |  |
Stock-based compensation expense | $ | $ 154 | $ 166 |  |
Recognized tax benefits related to stock-based compensation expense | $ | 45 | 48 |  |
Fair value of vested shares | $ | 198 | $ 92 |  |
Stock-based compensation expense not yet recognized | $ | $ 263 |  |  |
Period of recognition | 3 years |  |  |
LTIP [Member] | Restricted Stock [Member] | Officers and Key Employees [Member] |  |  |  |
Stock-Based Compensation [Abstract] |  |  |  |
Vesting period | 3 years |  |  |

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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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