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Noncash Share-based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2020
Noncash Share-based Compensation [Abstract] |
Awards outstanding [Table Text Block] | The following table presents the number of shares or units outstanding for each award type as of June 30, 2020 and December 31, 2019, respectively, (in thousands):
Award type |  | June 30, 2020 |  | December 31, 2019
Restricted stock units (time-based) |  | 1,674 |  |  | 1,893 |
Restricted stock units (performance-based) |  | 190 |  |  | 114 |
Stock appreciation rights |  | 32 |  |  | 65 |
Market stock units |  | 157 |  |  | 267 |
Schedule of Share-based Compensation Expense | The following table summarizes share-based compensation expense included in the Company's unaudited condensed consolidated statements of comprehensive income (loss) for the three and six months ended June 30, 2020 and 2019:
| Three Months Ended June 30, |  |  |  | Six Months Ended June 30, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
Share-based compensation: |  |  |  |  |  |  |
Cost of revenue | $ | 502 |  |  | $ | 494 |  |  | $ | 1,026 |  |  | $ | 1,032 |
Operating expenses: |  |  |  |  |  |  |
Selling and marketing | 1,965 |  |  | 1,414 |  |  | 3,831 |  |  | 2,814 |
General and administrative | 1,917 |  |  | 2,808 |  |  | 4,367 |  |  | 5,620 |
Research and development | 1,368 |  |  | 1,263 |  |  | 2,875 |  |  | 2,559 |
Total included in operating expenses | 5,250 |  |  | 5,485 |  |  | 11,073 |  |  | 10,993 |
Total share-based compensation expense | $ | 5,752 |  |  | $ | 5,979 |  |  | $ | 12,099 |  |  | $ | 12,025 |

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- 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=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 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=120381028&loc=d3e5047-113901 + Details
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