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Commitments and contingencies (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract] |
Future Minimum Rental Payments under Non-cancellable Operating Leases | As of December 31, 2017, future minimum rental payments under non-cancellable operating leases having initial or remaining lease terms of more than one year are as follows:
(In thousands) |  |  |  |
Year |  | December 31, 2017 |
2018 |  | $ | 1,895 |
2019 |  |  | 686 |
2020 |  |  | 705 |
2021 |  |  | 724 |
2022 |  |  | 743 |
2023 and thereafter |  |  | 1,384 |
Total |  | $ | 6,137 |
Future Minimum Capital Payments under Certain Data Licensing Agreements | As of December 31, 2017, material capital commitments under certain data licensing agreements of our Information Service segment were $23,247, shown as follows:
(In thousands) |  |  |  |
Year |  | December 31, 2017 |
2018 |  | $ | 4,990 |
2019 |  |  | 5,930 |
2020 |  |  | 6,250 |
2021 |  |  | 4,775 |
2022 |  |  | 1,302 |
Total |  | $ | 23,247 |

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- Definition Schedule of future minimum payments for capital commitment. + References No definition available. + Details
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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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