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Stock-Based Compensation Plans (Tables) | 3 Months Ended
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Mar. 31, 2020
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Outstanding Awards Under 2013 Omnibus Equity Incentive Plan | Activity under the 2013 Plan consisted of the following (dollars in thousands, except weighted average per share data):
|  | RSA Grants to Non-employee Directors |  |  | RSU Grants to Employees |  |  | RSU Grants to Independent Contractors |  |  | Total |  |  | Weighted- Average Grant Date Fair Value Per Share |
Nonvested shares at December 31, 2019 |  |  | 17,480 |  |  |  | 525,115 |  |  |  | 257,480 |  |  |  | 800,075 |  |  | $ | 33.91 |
Granted |  |  | — |  |  |  | 229,315 |  |  |  | 20,384 |  |  |  | 249,699 |  |  |  | 36.74 |
Vested |  |  | — |  |  |  | (139,152 | ) |  |  | (30,954 | ) |  |  | (170,106 | ) |  |  | 31.75 |
Transferred |  |  | — |  |  |  | (14,911 | ) |  |  | 14,911 |  |  |  | — |  |  |  | 32.26 |
Forfeited/canceled |  |  | — |  |  |  | (8,087 | ) |  |  | (223 | ) |  |  | (8,310 | ) |  |  | 38.19 |
Nonvested shares at March 31, 2020 (1) |  |  | 17,480 |  |  |  | 592,280 |  |  |  | 261,598 |  |  |  | 871,358 |  |  | $ | 35.10 |
Unrecognized stock-based compensation expense as of March 31, 2020 (2) |  | $ | 74 |  |  | $ | 20,079 |  |  | $ | 8,132 |  |  | $ | 28,285 |  |  |  |  |
Weighted average remaining vesting period (years) as of March 31, 2020 |  |  | 0.17 |  |  |  | 4.05 |  |  |  | 3.30 |  |  |  | 3.83 |  |  |  |  |
(1) | Nonvested RSUs will be settled through the issuance of new shares of common stock.
(2) | The total unrecognized compensation expense is expected to be recognized over a weighted-average period of approximately 3.83 years.
Schedule of Future Share Settlements |
|  | March 31, 2020 |
2021 |  |  | 60,373 |
2022 |  |  | 281,193 |
|  |  | 341,566 |
Stock-Based Compensation Expense | Components of stock-based compensation are included in selling, general and administrative expense in the condensed consolidated statements of net and comprehensive income and consisted of the following (in thousands):
|  | Three Months Ended March 31, |
|  | 2020 |  |  | 2019 |
ESPP |  | $ | 47 |  |  | $ | 30 |
RSAs – non-employee directors |  |  | 160 |  |  |  | 170 |
RSUs – employees (1) |  |  | 1,656 |  |  |  | 1,345 |
RSUs – independent contractors |  |  | 769 |  |  |  | 796 |
|  | $ | 2,632 |  |  | $ | 2,341 |
(1) | Includes expense related to the acceleration of vesting of certain RSUs.

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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=116856206&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=116856206&loc=d3e5047-113901 + Details
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