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Goodwill and Other Intangible Assets - Details of Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Indefinite-lived Intangible Assets [Line Items]
Total intangible assets	$ 11,227	$ 11,227
Total accumulated amortization	(5,499)	(5,185)
Intangible assets, net	5,728	6,042
Domain Names [Member]
Indefinite-lived Intangible Assets [Line Items]
Total intangible assets	6,327	6,327
Total accumulated amortization	(599)	(285)
Customer Backlog [Member]
Indefinite-lived Intangible Assets [Line Items]
Total intangible assets	4,000	4,000
Total accumulated amortization	(4,000)	(4,000)
Trade Names and Trademarks [Member]
Indefinite-lived Intangible Assets [Line Items]
Total intangible assets	900	900
Total accumulated amortization	$ (900)	$ (900)

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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