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Goodwill and Intangible Assets - Schedule of Acquired Intangible Assets by Major Asset Class (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 1,353 | $ 1,353
Additions | 5,229 |
Accumulated amortization | (1,636) | (704)
Net book value before impairment | 4,946 | 649
Impairment charge | (411) | (411)
Net book value | 4,535 | 238
Purchased Technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 265 | 265
Additions | 2,253 |
Accumulated amortization | (687) | (125)
Net book value before impairment | 1,831 | 140
Net book value | 1,831 | 140
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 999 | 999
Additions | 2,976 |
Accumulated amortization | (860) | (499)
Net book value before impairment | 3,115 | 500
Impairment charge | (411) | (411)
Net book value | $ 2,704 | $ 89
Trademarks/Trade Names [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 2 years | 2 years
Gross | $ 38 | $ 38
Accumulated amortization | $ (38) | $ (38)
Non-Compete [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 3 years | 3 years
Gross | $ 51 | $ 51
Accumulated amortization | $ (51) | (42)
Net book value before impairment |  | 9
Net book value |  | $ 9
Minimum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 2 years |
Minimum [Member] | Purchased Technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 4 years | 4 years
Minimum [Member] | Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 3 years | 3 years
Maximum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 10 years |
Maximum [Member] | Purchased Technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 6 years | 6 years
Maximum [Member] | Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 10 years | 6 years

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