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Stock-Based Compensation (Details) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Aug. 19, 2019 Officer | Jun. 30, 2021 USD ($) $ / shares shares | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) $ / shares shares | Jun. 30, 2020 USD ($) | May 02, 2016 shares
Officer Retiring in 2020 [Member] |  |  |  |  |  |
Stock-Based Compensation [Abstract] |  |  |  |  |  |
Number of retiring officers receiving accelerated vesting period | Officer | 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 |  |
Restricted Stock [Member] | LTIP [Member] |  |  |  |  |  |
Number of Shares [Roll Forward] |  |  |  |  |  |
Nonvested at beginning of the period (in shares) |  |  |  | 6,682 |  |
Granted (in shares) |  |  |  | 6,170 |  |
Vested (in shares) |  |  |  | (2,820) |  |
Forfeited (in shares) |  |  |  | 0 |  |
Nonvested at end of the period (in shares) |  | 10,032 |  | 10,032 |  |
Grant Date Weighted Average Fair Value [Abstract] |  |  |  |  |  |
Nonvested at beginning of the period (in dollars per share) | $ / shares |  |  |  | $ 39.30 |  |
Granted (in dollars per share) | $ / shares |  |  |  | 51.40 |  |
Vested (in dollars per share) | $ / shares |  |  |  | 39.94 |  |
Forfeited (in dollars per share) | $ / shares |  |  |  | 0 |  |
Nonvested at end of the period (in dollars per share) | $ / shares |  | $ 46.56 |  | $ 46.56 |  |
Stock-Based Compensation Expense [Abstract] |  |  |  |  |  |
Stock-based compensation expense | $ |  | $ 93 | $ 15 | $ 121 | $ 52 |
Recognized tax benefits related to stock-based compensation expense | $ |  | 27 | $ 4 | 35 | $ 15 |
Fair value of vested shares | $ |  |  |  | 113 |  |
Stock-based compensation expense not yet recognized | $ |  | $ 467 |  | $ 467 |  |
Period of recognition |  |  |  | 3 years |  |
Restricted Stock [Member] | LTIP [Member] | Officer Retiring in 2020 [Member] |  |  |  |  |  |
Stock-Based Compensation [Abstract] |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |
Restricted Stock [Member] | LTIP [Member] | Officers and Key Employees [Member] |  |  |  |  |  |
Stock-Based Compensation [Abstract] |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + 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)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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