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Share-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of Stock-based Compensation Expense | The components of the Company’s shared-based compensation expense for the six months ended June 30, 2020 and 2019 are as follows:
| Six Months Ended June 30, |  |
| 2020 |  | 2019
| (in thousands) |  |
Stock options | $ | 1,054 |  |  | $ | 1,326 |
Restricted stock and restricted stock units | 2,598 |  |  | 1,998 |
Employee Stock Purchase Plan | 273 |  |  | 335 |
Total pre-tax share-based compensation expense charged against income1 | $ | 3,925 |  |  | $ | 3,659 |
1.Share-based compensation expense is recorded in cost of services and selling, general and administrative expense in the Company’s Consolidated Statements of Comprehensive Income.
Summary of Other Information of Stock Option Plans | A summary of stock options outstanding under as of December 31, 2019 and changes during the six months ended June 30, 2020 is as follows:
| Stock Options Outstanding |  |
| Number of Shares |  | Weighted Average Exercise Price
| (in thousands) |  |
December 31, 2019 | 2,107 |  |  | $ | 32.99 |
Granted | 210 |  |  | $ | 24.43 |
Exercised | (99) |  |  | $ | 17.75 |
Forfeited | (11) |  |  | $ | 37.65 |
Expired | (39) |  |  | $ | 31.97 |
June 30, 2020 | 2,168 |  |  | $ | 32.85 |
Assumption For Fair Value of Options Granted | The fair value of stock option awards granted in 2020 and 2019 was estimated on the date of grant using the Black-Scholes option valuation model with the following assumptions:
| Six Months Ended June 30, |  |
| 2020 |  | 2019
Risk-free interest rate | 1.8 | % |  | 2.5 | %
Weighted average expected life | 6.6 years |  | 5.7 years
Expected volatility | 26.5 | % |  | 22.6 | %
Dividend yield | 3.2 | % |  | 1.9 | %
Summarized Information of Stock Options Outstanding | The following table summarizes other information about the stock options at June 30, 2020:
| June 30, 2020
| (amounts in thousands, except per share data)
Outstanding: |
Aggregate intrinsic value | $ | 1,497 |
Weighted average remaining contractual life | 5.6 years
Exercisable: |
Number of options | 1,450 |
Weighted average exercise price | $ | 31.08 |
Aggregate intrinsic value | $ | 1,491 |
Weighted average remaining contractual life | 4.5 years
Summary of Outstanding Restricted Stock Units and Restricted Stock | A summary of the outstanding restricted stock units and restricted stock as of December 31, 2019 and changes during the six months ended June 30, 2020 is as follows:
| Restricted Stock Units and Restricted Stock |  |
| Number |  | Weighted Average Grant Date Fair Value
| (in thousands) |  |
December 31, 2019 | 362 |  |  | $ | 43.24 |
Granted | 307 |  |  | $ | 24.43 |
Vested | (93) |  |  | $ | 42.30 |
Forfeited | (10) |  |  | $ | 32.69 |
June 30, 2020 | 566 |  |  | $ | 33.37 |
Options Granted Estimated Expense Valuation Assumptions | The expense associated with the options granted under the ESPP during the six months ended June 30, 2020 and 2019 was estimated on the date of grant using the Black-Scholes option valuation model with the following assumptions:
| Six Months Ended June 30, |  |
| 2020 |  | 2019
Risk-free interest rate | 1.6% |  | 2.6%
Weighted average expected life (years) | 1.0 |  | 1.0
Expected volatility | 42.0% |  | 30.8%
Dividend yield | 3.3% |  | 1.9%
Summary of ESPP Annual Offerings | The following table summarizes information about the SERP during the six months ended June 30, 2020 and 2019:
| Six Months Ended June 30, |  |
| 2020 |  | 2019
| (in thousands) |  |
SERP expense 1 | $ | 298 |  |  | $ | 346 |
Unrealized gain recorded in SERP liability account | $ | 763 |  |  | $ | 4,939 |
1.Both the SERP match and the deferrals are included in the selling, general and administrative caption in the Consolidated Statements of Comprehensive Income.

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- Definition Tabular disclosure of an equity-based arrangement (such as stock or unit options and stock or unit awards) with an individual employee, which is generally an employment contract between the entity and a selected officer or key employee containing a promise by the employer to pay certain equity-based awards at future dates, sometimes including a period after retirement, upon compliance with stipulated requirements. This type of arrangement is distinguished from broader based employee benefit plans as it is usually tailored to the employee. Disclosure also typically includes the amount of related compensation expense recognized during the reporting period, the number of shares or units issued during the period under such arrangements, and the carrying amount as of the balance sheet date of the related liability. + 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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20517-108367 + Details
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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + 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 (h)(1) -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 S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + 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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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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