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Stock-Based Compensation Plans - Narrative (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 $ / shares shares | Dec. 31, 2022 USD ($) tranche $ / shares shares | Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) $ / shares | May 31, 2014 shares
Employee |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Restricted stock awarded (in shares) | shares | 21,871 |  |  |  |
Granted (in dollars per share) | $ / shares | $ 43.30 |  |  |  |
Employee Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares authorized (in shares) | shares |  | 500,000 |  |  |
Employee discount (as a percent) |  | 15.00% |  |  |
Employee purchase price (as a percent) |  | 12.00% |  |  |
Stock-based compensation expense |  | $ 123 |  |  |
Stock-settled bonus awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period (in years) |  | 3 years |  |  |
Number of tranches | tranche |  | 3 |  |  |
Vested paid in full (as a percent) |  | 100.00% |  |  |
Stock sale restriction (in years) |  | 2 years |  |  |
Cost not yet recognized, amount |  | $ 900 |  |  |
Fair value of awards |  | $ 900 | $ 900 | $ 1,200 |
Weighted average amortization period of compensation not yet recognized (in years) |  | 1 year 4 months 24 days |  |  |
Stock-settled bonus awards | Share-based Payment Arrangement, Tranche One |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage (as a percent) |  | 33.33% |  |  |
Stock-settled bonus awards | Share-based Payment Arrangement, Tranche Two |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage (as a percent) |  | 33.33% |  |  |
Employee Vesting Stock Awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period (in years) |  | 3 years |  |  |
Employee Vesting Stock Awards | Share-based Payment Arrangement, Tranche One |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage (as a percent) |  | 33.33% |  |  |
Employee Vesting Stock Awards | Share-based Payment Arrangement, Tranche Two |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage (as a percent) |  | 33.33% |  |  |
Employee Vesting Stock Awards | Share-based Payment Arrangement, Tranche Three |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage (as a percent) |  | 33.33% |  |  |
Restricted Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period (in years) |  | 1 year 10 months 24 days |  |  |
Stock-based compensation expense |  | $ 2,000 |  |  |
Granted (in dollars per share) | $ / shares |  | $ 43.01 | $ 41.90 | $ 33.68 |
Fair value of shares vested |  | $ 1,700 | $ 1,700 | $ 1,600 |
Performance share awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period (in years) |  | 3 years |  |  |
Vested paid in full (as a percent) |  | 100.00% |  |  |
Granted (in dollars per share) | $ / shares |  | $ 43.30 |  |  |
Compensation expense not yet recognized |  | $ 1,200 |  |  |
Weighted average amortization period of compensation not yet recognized (in years) |  | 1 year 6 months |  |  |
Weighted average fair value of vesting stock awards that vested |  | $ 500 |  |  |
Performance share awards | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage (as a percent) |  | 0.00% |  |  |
Performance share awards | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage (as a percent) |  | 100.00% |  |  |
Restricted Stock Plan 2006 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares authorized (in shares) | shares |  | 1,500,000 |  |  | 500,000
Shares available for issuance (in shares) | shares |  | 598,637 |  |  |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=128089324&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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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