Goodwill and Intangible Assets - Schedule of Changes in the Carrying Amount of Goodwill (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2019 USD ($)
Goodwill [Line Items]
Balance, beginning of year	$ 15,941
Effect of foreign currency translation	3
Balance, end of year	15,944
Software & Services [Member]
Goodwill [Line Items]
Balance, beginning of year	11,318
Effect of foreign currency translation	3
Balance, end of year	11,321
Portal & Advertising [Member]
Goodwill [Line Items]
Balance, beginning of year	4,623
Balance, end of year	$ 4,623

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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