XML 28 R18.htm IDEA: XBRL DOCUMENT
v3.19.2

Stock-Based Compensation (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of stock-based compensation expense | Included in the accompanying condensed consolidated statements of operations are the following amounts of stock-based compensation for the three and six months ended June 30, 2019 and 2018 (amounts in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months | ​ | Six months |
​ | ​ | ended | ​ | ended |
​ | ​ | June 30, | ​ | June 30, |
​ | ​ | 2019 | ​ | 2018 | ​ | 2019 | ​ | 2018 |
Operating expense |  | $ | 11 |  | 10 |  | 48 |  | 27 | ​
Selling, general and administrative | ​ |  | 2,512 | ​ | 1,386 | ​ | 5,091 |  | 2,774 | ​
​ | ​ | $ | 2,523 | ​ | 1,396 | ​ | 5,139 |  | 2,801 | ​
Series A common stock |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of stock awards activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  |  | ​ |  | Weighted |  |  | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | average | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | remaining | ​ | Aggregate
​ | ​ | ​ | ​ | ​ | ​ | ​ | contractual | ​ | intrinsic
​ | ​ | Series A | ​ | WAEP | ​ | life | ​ | value
​ | ​ | (in thousands) | ​ | ​ | ​ | ​ | (in years) | ​ | (in millions)
Outstanding at January 1, 2019 |  | 393 | ​ | $ | 33.31 | ​ | ​ | ​ | ​ | ​
Granted |  | — | ​ | $ | — | ​ | ​ | ​ | ​ | ​
Exercised |  | (90) | ​ | $ | 33.21 | ​ | ​ | ​ | ​ | ​
Forfeited/cancelled | ​ | — | ​ | $ | — | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2019 |  | 303 | ​ | $ | 33.34 |  | 0.5 | ​ | $ | 21
Exercisable at June 30, 2019 |  | 303 | ​ | $ | 33.34 |  | 0.5 | ​ | $ | 21
Series C common stock |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of stock awards activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  |  | ​ |  | Weighted |  |  | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | average | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | remaining | ​ | Aggregate
​ | ​ | ​ | ​ | ​ | ​ | ​ | contractual | ​ | intrinsic
​ | ​ | Series C | ​ | WAEP | ​ | life | ​ | value
​ | ​ | (in thousands) | ​ | ​ | ​ | ​ | (in years) | ​ | (in millions)
Outstanding at January 1, 2019 |  | 2,356 | ​ | $ | 43.77 | ​ | ​ | ​ | ​ | ​
Granted |  | 41 | ​ | $ | 88.99 | ​ | ​ | ​ | ​ | ​
Exercised |  | (181) | ​ | $ | 33.14 | ​ | ​ | ​ | ​ | ​
Forfeited/cancelled | ​ | — | ​ | $ | — | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2019 |  | 2,216 | ​ | $ | 45.48 |  | 4.1 | ​ | $ | 130
Exercisable at June 30, 2019 |  | 1,415 | ​ | $ | 42.57 |  | 3.3 | ​ | $ | 87

X
- Definition Tabular disclosure of share-based payment arrangement. + References Reference 1: 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=116856206&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |