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Equity-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Equity-Based Compensation Plans with Grants Outstanding | During the second quarter of 2018, the Company issued 332 Options and 16 RSUs under the NVR, Inc. 2010 Equity Incentive Plan (the "2010 Plan"), the NVR, Inc. 2014 Equity Incentive Plan (the "2014 Plan"), and the 2018 Plan as follows:
|  | 2010 Plan |  | 2014 Plan |  | 2018 Plan
Options Granted |  |  |  |  |  |
Options - service-only (1) |  | 4 |  |  | 90 |  |  | 72 |
Options - performance-based (2) |  | — |  |  | 94 |  |  | 72 |
Total Options Granted |  | 4 |  |  | 184 |  |  | 144 |
RSUs Granted |  |  |  |  |  |
RSUs - service-only (3) |  | 8 |  |  | — |  |  | — |
RSUs - performance-based (4) |  | 8 |  |  | — |  |  | — |
Total RSUs Granted |  | 16 |  |  | — |  |  | — |
(1) Of the 166 service-only Options granted, 34 will vest over two years in 50% increments on December 31, 2020 and 2021; the remaining 132 Options will vest over four years in 25% increments on December 31, 2020, 2021, 2022, and 2023. Vesting for the Options is contingent solely upon continued employment or continued service as a Director. (2) Of the 166 performance-based Options granted, 34 will vest over two years in 50% increments on December 31, 2020 and 2021; the remaining 132 performance-based Options will vest over four years in 25% increments on December 31, 2020, 2021, 2022, and 2023. Vesting for the performance-based Options is contingent upon both continued employment or continued service as a Director and the Company's return on capital performance during 2018 through 2020. (3) The service-only RSUs granted will vest over two years in 50% increments on December 31, 2022 and 2023. Vesting for the RSUs is contingent solely upon continued employment. (4) The performance-based RSUs granted will vest over two years in 50% increments on December 31, 2022 and 2023. Vesting for the performance-based RSUs is contingent upon both continued employment and the Company's return on capital performance during 2018 through 2020.
Equity-Based Compensations Plans | The following table provides additional information relative to NVR's equity-based compensation plans for the six months ended June 30, 2018:
Options |  | Shares |  | Weighted Average Per Share Exercise Price
Outstanding at December 31, 2017 |  | 916 |  |  | $ | 1,119.92 |
Granted |  | 340 |  |  | 3,023.76 |
Exercised |  | (91 | ) |  | 949.64 |
Forfeited |  | (27 | ) |  | 1,300.09 |
Outstanding at June 30, 2018 |  | 1,138 |  |  | $ | 1,697.50 |
Exercisable at June 30, 2018 |  | 371 |  |  | $ | 959.65 |
RSUs |  |  |  |
Outstanding at December 31, 2017 |  | 10 |  |  |
Granted |  | 16 |  |  |
Vested |  | (5 | ) |  |
Forfeited |  | — |  |  |
Outstanding at June 30, 2018 |  | 21 |  |  |
Vested, but not issued at June 30, 2018 |  | — |  |  |
Black-Scholes Option-Pricing Model Assumptions | The fair value of the Options granted during 2018 was estimated on the grant date using the Pricing Model, based on the following assumptions:
|  | 2018
Estimated option life (years) |  | 5.06
Risk-free interest rate (range) |  | 2.19% - 2.99%
Expected volatility (range) |  | 16.57% - 18.83%
Expected dividend rate |  | —%
Weighted average grant date fair value per share of Options granted |  | $689.47

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- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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