XML 53 R42.htm IDEA: XBRL DOCUMENT
v3.21.1

Equity-Based Compensation (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock Option Activity | Stock option activity during 2020 and 2021 was as follows:
|  | Number of Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (in years) |  |  | Aggregate Intrinsic Value (in thousands) |
Options outstanding at January 1, 2020 |  |  | 1,360,068 |  |  | $ | 39.40 |  |  |  | 7.57 |  |  | $ | 1,650 |
Options granted |  |  | 507,600 |  |  |  | 33.13 |  |  |  | 9.18 |  |  |  | 157 |
Options exercised |  |  | (68,700 | ) |  |  | 29.15 |  |  | N/A |  |  |  | 854 |
Options cancelled |  |  | (288,662 | ) |  |  | 39.67 |  |  | N/A |  |  | N/A |
Options outstanding at December 31, 2020 |  |  | 1,510,306 |  |  |  | 37.56 |  |  |  | 7.35 |  |  |  | 1,414 |
Options granted |  |  | 282,320 |  |  |  | 57.14 |  |  |  | 10.01 |  |  |  | — |
Options exercised |  |  | (352,297 | ) |  |  | 36.16 |  |  | N/A |  |  |  | 7,300 |
Options cancelled |  |  | (34,725 | ) |  |  | 37.44 |  |  | N/A |  |  | N/A |
Options outstanding at March 31, 2021 |  |  | 1,405,604 |  |  | $ | 41.85 |  |  |  | 7.88 |  |  | $ | 19,300 |
Options exercisable at December 31, 2020 |  |  | 596,606 |  |  | $ | 45.37 |  |  |  | 5.55 |  |  | $ | 543 |
Options exercisable at March 31, 2021 |  |  | 524,509 |  |  | $ | 44.58 |  |  |  | 6.09 |  |  | $ | 6,183 |
Schedule of Stock Options Valuation Assumptions | The following table summarizes the grant-date fair value of options and the assumptions used to develop the fair value estimates for options granted during the three months ended March 31, 2021 and year ended December 31, 2020:
|  | March 31, 2021 |  |  | December 31, 2020 |
Weighted average grant-date fair value of options |  | $ | 26.53 |  |  | $ | 12.37 |
Risk-free interest rate |  |  | 2.3 | % |  |  | 1.6 | %
Expected volatility |  |  | 51 | % |  |  | 41 | %
Expected life (in years) |  |  | 5.0 |  |  |  | 5.0 |
Restricted Stock Activity | Restricted stock activity during 2020 and 2021 was as follows:
|  | Number of Shares |  |  | Weighted Average Grant-Date Fair Value |
Unvested at January 1, 2020 |  |  | 805,136 |  |  | $ | 34.14 |
Granted |  |  | 637,312 |  |  |  | 25.82 |
Cancelled |  |  | (129,683 | ) |  |  | 34.56 |
Vested |  |  | (289,769 | ) |  |  | 35.88 |
Unvested at December 31, 2020 |  |  | 1,022,996 |  |  | $ | 28.41 |
Granted |  |  | 242,900 |  |  |  | 55.97 |
Cancelled |  |  | (15,675 | ) |  |  | 32.50 |
Vested |  |  | (269,733 | ) |  |  | 29.33 |
Unvested at March 31, 2021 |  |  | 980,488 |  |  | $ | 34.92 |
Restricted Stock Unit Activity | Restricted stock unit activity during 2020 and 2021 was as follows:
|  | Number of Units |  |  | Weighted Average Grant-Date Fair Value |
Unvested at January 1, 2020 |  |  | 447,357 |  |  | $ | 38.89 |
Granted |  |  | 583,680 |  |  |  | 10.60 |
Performance adjustment |  |  | 117,772 |  |  |  | 13.50 |
Cancelled |  |  | (63,056 | ) |  |  | 43.35 |
Vested |  |  | (12,691 | ) |  |  | 42.09 |
Unvested at December 31, 2020 |  |  | 1,073,062 |  |  | $ | 20.15 |
Granted |  |  | — |  |  |  | — |
Performance adjustment |  |  | 120,919 |  |  |  | 19.48 |
Cancelled |  |  | — |  |  |  | — |
Vested |  |  | (184,051 | ) |  |  | 42.30 |
Unvested at March 31, 2021 |  |  | 1,009,930 |  |  | $ | 16.03 |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration