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Identifiable Intangible Assets from Acquisitions - Summary of Identifiable Intangible Assets from Acquisitions (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 26,530 | $ 26,530
Accumulated Amortization | (12,375) | (7,045)
Net Carrying Amount | 9,196 | 19,485
Impairment | (4,959) |
Customer Relationships |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 13,018 | 13,018
Accumulated Amortization | (4,693) | (2,784)
Net Carrying Amount | 4,895 | 10,234
Impairment | (3,430) |
Technologies |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 9,369 | 9,369
Accumulated Amortization | (4,731) | (2,252)
Net Carrying Amount | 3,576 | 7,117
Impairment | (1,062) |
Non-compete Agreements |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 3,409 | 3,409
Accumulated Amortization | (2,413) | (1,628)
Net Carrying Amount | 650 | 1,781
Impairment | (346) |
Tradenames |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 734 | 734
Accumulated Amortization | (538) | (381)
Net Carrying Amount | 75 | $ 353
Impairment | $ (121) |

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