Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands |
12 Months Ended |
|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Dec. 31, 2012 |
| Accounting Policies and General Information [Line Items] |
|
|
|
|
| Allowance for doubtful accounts |
$ 126
|
$ 131
|
|
|
| Impairment of long-term investments |
$ 800
|
0
|
$ 0
|
|
| Fair value of a reporting unit less than carrying amount, including goodwill |
50.00%
|
|
|
|
| Goodwill impairment losses |
$ 0
|
|
|
|
| Sales rebates provided to the agencies and advertisers |
1,179
|
5,005
|
7,207
|
|
| Content sub-licensing revenue from discontinued operations |
2,929
|
9,218
|
7,369
|
|
| Revenue |
129,996
|
135,812
|
122,031
|
|
| Net gains from barter transactions |
137
|
1,556
|
1,020
|
|
| Net proceeds from barter transactions |
409
|
4,428
|
2,059
|
|
| Barter transaction cost |
247
|
2,606
|
915
|
|
| Business tax and surcharge on barter transactions |
25
|
266
|
124
|
|
| External advertising and market promotion expenses from continuing operations |
$ 8,089
|
$ 5,978
|
$ 5,056
|
|
| Capitalization of software development costs |
|
|
|
|
| Interest and penalties net of tax recognized |
$ 0
|
$ 0
|
$ 0
|
|
| Income tax examination higher limit |
15.00%
|
|
|
|
| Value added tax on revenues |
17.00%
|
|
|
|
| Value added tax on sub-licensing revenues |
6.00%
|
|
|
|
| Employee benefit costs |
$ 5,481
|
$ 3,818
|
$ 3,243
|
|
| Statutory general reserve rate |
10.00%
|
|
|
|
| Statutory general reserve rate of registered capital |
50.00%
|
|
|
|
| Dividends declared |
$ 0
|
$ 0
|
$ 0
|
|
| Minimum [Member] |
|
|
|
|
| Accounting Policies and General Information [Line Items] |
|
|
|
|
| Amortization percentage of intangible assets |
70.00%
|
|
|
|
| Maximum [Member] |
|
|
|
|
| Accounting Policies and General Information [Line Items] |
|
|
|
|
| Amortization percentage of intangible assets |
90.00%
|
|
|
|
| Content Copyrights [Member] |
|
|
|
|
| Accounting Policies and General Information [Line Items] |
|
|
|
|
| Impairment of intangible assets |
$ 0
|
$ 0
|
$ 0
|
|
| Online game licenses [Member] |
|
|
|
|
| Accounting Policies and General Information [Line Items] |
|
|
|
|
| Other intangible assets, amortization period |
3 years
|
|
|
|
| Impairment of intangible assets |
$ 770
|
$ 808
|
$ 808
|
|
| Acquired computer software [Member] |
|
|
|
|
| Accounting Policies and General Information [Line Items] |
|
|
|
|
| Other intangible assets, amortization period |
5 years
|
|
|
|
| Internal use software development costs [Member] |
|
|
|
|
| Accounting Policies and General Information [Line Items] |
|
|
|
|
| Other intangible assets, amortization period |
5 years
|
|
|
|
| Domain name [Member] |
|
|
|
|
| Accounting Policies and General Information [Line Items] |
|
|
|
|
| Other intangible assets, amortization period |
5 years
|
|
|
|
| Land use right [Member] |
|
|
|
|
| Accounting Policies and General Information [Line Items] |
|
|
|
|
| Other intangible assets, amortization period |
30 years
|
|
|
|