v3.19.1

Stock incentive plans (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2019
Stock incentive plans |
Schedule of stock-based compensation expense |
|  | Three Months Ended
|  | March 31,
|  | 2019 |  | 2018
Network operations |  | $ | 506 |  | $ | 537
Development and technology |  |  | 303 |  |  | 278
Selling and marketing |  |  | 529 |  |  | 473
General and administrative |  |  | 1,006 |  |  | 1,838
Total stock-based compensation expense |  | $ | 2,344 |  | $ | 3,126
Summary of stock option activity |
|  |  |  |  |  |  | Weighted- |  |  |
|  |  |  |  |  |  | Average |  |  |
|  |  |  | Weighted |  | Remaining |  |  |
|  | Number of |  | Average |  | Contract |  | Aggregate
|  | Options |  | Exercise |  | Life |  | Intrinsic
|  | (000’s) |  | Price |  | (years) |  | Value
Outstanding at December 31, 2018 |  | 304 |  | $ | 7.49 |  | 3.8 |  | $ | 3,970
Exercised |  | (4) |  | $ | 2.01 |  |  |  |  |
Canceled/forfeited |  | — |  | $ | — |  |  |  |  |
Outstanding and exercisable at March 31, 2019 |  | 300 |  | $ | 7.55 |  | 3.6 |  | $ | 4,766
Summary of RSU activity |
|  |  |  | Weighted Average
|  | Number of Shares |  | Grant-Date Fair
|  | (000’s) |  | Value
Non-vested at December 31, 2018 |  | 3,119 |  | $ | 8.60
Granted(1) |  | 517 |  | $ | 23.36
Vested |  | (2,656) |  | $ | 6.58
Canceled/forfeited |  | (10) |  | $ | 25.51
Non-vested at March 31, 2019 |  | 970 |  | $ | 21.80
| (1) |  | The RSUs granted to all of our named executive officers in 2017 were subject to satisfaction of specified service-based and performance-based conditions. The performance objectives were subject to under- or over- achievement on a sliding scale, with a threshold of 50% of the target number of RSUs and a maximum of 150% of the target RSUs. In February 2019, our Compensation Committee determined actual achievement of the 2017 performance-based RSUs resulting in additional RSUs granted of approximately 29,000 at a grant-date fair value of $11.94 per share during the three months ended March 31, 2019.

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 allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + 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=109197908&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=109197908&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=109197908&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=109197908&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=109197908&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=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration