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Discontinued Operations - Assets and Liabilities of Discontinued Operations on Condensed Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Disposal Group Including Discontinued Operation Balance Sheet Disclosures [Abstract] |  |
Deferred income tax assets, net | $ 81 | $ 178
Total assets of discontinued operations | 81 | 178
Accounts payable and accrued expenses | 3 | 51
Remaining lease obligations |  | 485
Total current liabilities | 3 | 536
Total liabilities of discontinued operations | $ 3 | $ 536

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