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Commitments and contingencies (Tables)

12 Months Ended

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