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Cumulative Value of Intangible Assets Related to Acquisition (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Finite-Lived Intangible Liabilities [Line Items] |  |
Accumulated Impairment | $ (255) | $ (3,444)
FCI, Centronix, BTL, Shannon and Bigtera |  |
Finite-Lived Intangible Liabilities [Line Items] |  |
Cost | 13,117 |
Accumulated Impairment | (3,699) |
Accumulated Amortization | $ (9,418) |

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