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Commitments and Contingencies - Future Minimum Capital Payments under Certain Data Licensing Agreements (Detail)
$ in Thousands
Dec. 31, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2018 $ 101
2019 157
2020 157
2021 157
2022 169
Thereafter 312
Total 1,053
Amounts representing interest 306
Present value of net minimum payments 747
Less: Current maturities (101)
Long-term payment obligations $ 646