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Share-Based Payments - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Restricted Stock Awards |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award cliff vesting period | 4 years |  |
Granted (in dollars per share) | $ 59.95 | $ 43.55 | $ 45.97
Fair value of awards vested | $ 3,000,000 | $ 2,100,000 | $ 2,800,000
Unrecognized compensation costs | $ 2,900,000 |  |
Unrecognized compensation costs, period of recognition | 1 year 10 months 2 days |  |
Restricted Stock Awards | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award vesting period | 3 years |  |
Restricted Stock Awards | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award vesting period | 4 years |  |
Stock Performance Awards |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award vesting period | 3 years |  |
Granted (in dollars per share) | $ 54.91 | $ 38.34 | $ 47.79
Fair value of awards vested | $ 5,100,000 | $ 2,500,000 | $ 3,400,000
Unrecognized compensation costs | $ 400,000 |  |
Unrecognized compensation costs, period of recognition | 10 months 28 days |  |
Stock Performance Awards | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected volatility rate measurement period | 3 years |  |
Percentage of target amount as actual payment | 0.00% |  |
Stock Performance Awards | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected volatility rate measurement period | 5 years |  |
Percentage of target amount as actual payment | 150.00% |  |
The 1999 Employee Stock Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based payment awards, number of shares authorized (in shares) | 1,400,000 |  |
Discount from market price rate (as a percent) | 15.00% |  |
Maximum number of shares available to be purchased per participant (in shares) | 2,000 |  |
Purchase period | 6 months |  |
Maximum employee subscription amount | $ 25,000 |  |
Shares holding period | 18 months |  |
Share-based payment arrangement, expense | $ 300,000 | $ 200,000 | $ 200,000
Shares issued under the plan (in shares) | 26,420 | 27,975 | 31,661
Number of shares available for grant (in shares) | 263,706 |  |
The 1999 Employee Stock Purchase Plan | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Employee monthly withholding amounts | $ 10 |  |
The 1999 Employee Stock Purchase Plan | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Employee monthly withholding amounts | $ 2,000 |  |
The 2014 Stock Incentive Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based payment awards, number of shares authorized (in shares) | 1,900,000 |  |
Share-based payment arrangement, expense | $ 6,600,000 | $ 6,700,000 | $ 6,100,000
Number of shares available for grant (in shares) | 587,211,000 |  |
Share-based payment arrangement, expense, tax benefit | $ 1,700,000 | $ 1,800,000 | $ 2,100,000

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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + 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 (d)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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