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Income Taxes - Schedule of Income Tax Provisions (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current: |  |  |
U.S. federal | $ 145 | $ 67 | $ 21
State and local | 3 | 6 | 3
Total current provision | 148 | 73 | 24
Deferred: |  |  |
U.S. federal | 10 | 23 | 1
State and local | 5 | 5 | 1
Total deferred provision | 15 | 28 | 2
Total tax provision | $ 163 | $ 101 | $ 26

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