XML 36 R23.htm IDEA: XBRL DOCUMENT
v3.20.2

STOCK-BASED COMPENSATION (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2020
Share-based Payment Arrangement [Abstract] |
Allocation of recognized period costs | The following table summarizes the allocation of stock-based compensation in the condensed consolidated statements of operations (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2020 |  | 2019 |  | 2020
Delivery costs | $ | 176 |  |  | $ | 365 |  |  | $ | 539 |  |  | $ | 897 |
Sales and marketing expense | 1,432 |  |  | 3,791 |  |  | 3,091 |  |  | 7,627 |
Research and development expense | 638 |  |  | 1,510 |  |  | 1,204 |  |  | 3,514 |
General and administration expense | 5,240 |  |  | 5,912 |  |  | 7,432 |  |  | 12,773 |
Total stock-based compensation expense | $ | 7,486 |  |  | $ | 11,578 |  |  | $ | 12,266 |  |  | $ | 24,811 |
Summary of common stock option activity | Options to purchase shares of common stock generally vest over four years and expire 10 years following the date of grant. The following table summarizes changes in common stock options:
| Shares (in thousands) |  | Weighted-Average Exercise Price |  | Weighted Average Contractual Life (in years) |  | Aggregate Intrinsic Value(1) (in thousands)
Options outstanding — December 31, 2019 | 1,000 |  |  | $ | 22.99 |  |  |  |  |
Granted | — |  |  | — |  |  |  |  |
Exercised | (324) |  |  | 19.66 |  |  |  |  | $ | 17,774 |
Forfeited | (17) |  |  | 28.10 |  |  |  |  |
Canceled | (1) |  |  | 20.67 |  |  |  |  |
Options outstanding — September 30, 2020 | 658 |  |  | 24.49 |  |  | 5.88 |  | $ | 30,321 |
Exercisable — September 30, 2020 | 595 |  |  | $ | 24.32 |  |  | 5.79 |  | $ | 27,516 |
Summary of RSU activity | We grant restricted stock units ("RSUs") to employees and our non-employee directors. The following table summarizes changes in RSUs, inclusive of performance-based RSUs:
| Shares (in thousands) |  | Weighted-Average Grant Date Fair Value |  | Weighted-Average Remaining Contractual Term (in years) |  | Unamortized Compensation Costs (in thousands)
Unvested — December 31, 2019 | 1,741 |  |  | $ | 18.55 |  |  |  |  |
Granted | 1,671 |  |  | 40.86 |  |  |  |  |
Vested(1) | (616) |  |  | 24.41 |  |  |  |  |
Forfeited | (251) |  |  | 22.88 |  |  |  |  |
Unvested — September 30, 2020 | 2,545 |  |  | $ | 31.35 |  |  | 3.40 |  | $ | 63,299 |

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

X
- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock
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=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 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&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=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration