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Taxation (Tables)
12 Months Ended
Dec. 31, 2017
Taxation [Abstract]  
Schedule of Current and Deferred Portions of Income Tax Expense
Continuing operations
 
Years ended December 31,
 
(In thousands)
 
2015
 
2016
 
2017
 
Current income tax expenses /(benefit)
 
 
289
 
 
71
 
 
(38)
 
Deferred income tax benefit
 
 
(4,034)
 
 
(2,540)
 
 
(2,214)
 
Income tax benefit
 
 
(3,745)
 
 
(2,469)
 
 
(2,252)
 
Summary of Aggregate Amount and Per Share Effect of Tax Holiday
 
 
Years ended December 31,
 
 
 
2015
 
2016
 
2017
 
Aggregate dollar effect (In thousands)
 
 
(830)
 
 
(1,430)
 
 
(4,102)
 
Per share effect—basic
 
 
0.00
 
 
0.00
 
 
(0.01)
 
Per share effect—diluted
 
 
0.00
 
 
0.00
 
 
(0.01)
 
Reconciliation of Total Tax Expense (Benefit)
The reconciliation of total tax benefit computed by applying the respective statutory income tax rates to pre-tax loss is as follows:
 
Continuing operations
 
Years ended December 31,
 
(In thousands)
 
2015
 
2016
 
2017
 
Income tax benefit at PRC statutory rate (based on statutory tax rate applicable to enterprises in China)
 
 
(5,202)
 
 
(8,319)
 
 
(11,617)
 
Effects of differences in tax rates in different jurisdictions applicable to entities of the Group outside of the PRC
 
 
2,400
 
 
2,145
 
 
1,341
 
Non-deductible expenses
 
 
14
 
 
12
 
 
32
 
Effect of Super Deduction available to Shenzhen Xunlei
 
 
 
 
(901)
 
 
(546)
 
Effect of tax holiday
 
 
1,537
 
 
2,234
 
 
4,102
 
Change in valuation allowance of deferred tax assets
 
 
4,750
 
 
 
 
6,748
 
Effect on deferred tax assets due to change in tax rates
 
 
(8)
 
 
 
 
 
Outside basis difference arising from VIE and its subsidiaries in the PRC
 
 
(2,174)
 
 
(5,743)
 
 
(652)
 
Expiration of tax loss
 
 
290
 
 
91
 
 
 
Others
 
 
(5,352)
 
 
8,012
 
 
(1,660)
 
Income tax benefit
 
 
(3,745)
 
 
(2,469)
 
 
(2,252)
 
Summary of Changes in Deferred Tax Asset and Liability Balances
The tax effects of temporary differences that give rise to the deferred tax asset and liability balances at December 31, 2016 and 2017 are as follows:
 
(In thousands)
 
December 31,
2016
 
December 31,
2017
 
Deferred tax assets, current portion:
 
 
 
 
 
 
 
Net operating loss carried forward (note a)
 
 
1,276
 
 
 
Amortization of intangible assets arising from intragroup transactions (note b)
 
 
51
 
 
 
Valuation allowance
 
 
(106)
 
 
 
Deferred tax assets, current portion, net
 
 
1,221
 
 
 
 
 
 
 
 
 
 
 
Deferred tax assets, non-current portion:
 
 
 
 
 
 
 
Net operating losses carried forward (note a)
 
 
12,093
 
 
19,246
 
Impairment of long-term equity investment
 
 
348
 
 
562
 
Allowance for advance to suppliers
 
 
576
 
 
88
 
Impairment of intangible assets
 
 
 
 
686
 
Impairment of property and equipment
 
 
 
 
151
 
Impairment of other receivables
 
 
 
 
1,938
 
Valuation allowance
 
 
(9,745)
 
 
(16,599)
 
Deferred tax assets, non-current portion, net (note d)
 
 
3,272
 
 
6,072
 
 
 
 
 
 
 
 
 
Deferred tax liabilities, non-current portion:
 
 
 
 
 
 
 
Outside basis difference (note c)
 
 
(635)
 
 
 
Summary of Net Operating Tax Loss Carryforwards
Note a:
As of December 31, 2017, the Group had tax loss carryforwards of USD 10,314,000, which can be carried forward to offset future taxable income. The net operating tax loss carryforwards will begin to expire as follows:
 
(In thousands)
 
 
 
 
2018
 
 
5,721
 
2019
 
 
3,389
 
2020
 
 
555
 
2021
 
 
75
 
2022 and thereafter
 
 
574
 
 
 
 
10,314
 
 
Note b:
Before 2008, Giganology Shenzhen sold several self-developed software at a market valuation of approximately RMB 42 million (USD 6.4 million) to Shenzhen Xunlei. Shenzhen Xunlei was entitled to capitalize the amounts as intangible assets for tax purposes and the respective amortization charges could be entitled to claim tax deduction. As a result, this transaction had created a temporary difference between the accounting base (on a group basis) and the tax base (on Shenzhen Xunlei standalone basis) and led to origination of a deferred tax asset.
 
Note c:
The deferred tax liabilities arising from the aggregate retained earnings and reserves of the VIE and its subsidiaries that are expected to be recovered by Giganology Shenzhen and other affiliates of the Group in the future periods, amounted to USD 2,541,000 and nil as of December 31, 2016 and 2017, respectively.
 
Note d:
As at December 31, 2017, the deferred tax asset and liability balances are expected to be recoverable as follows:
Disclosure of Deferred Tax Asset And Liability Balances That Are Expected To Be Recoverable [Table Text Block]
As at December 31, 2017, the deferred tax asset and liability balances are expected to be recoverable as follows:
 
(In thousands)
 
 
 
 
Within one year
 
 
6,033
 
After one year
 
 
39
 
 
 
 
6,072
 
Schedule of Movement of Valuation Allowance
 
 
Years ended December 31,
 
(In thousands)
 
2015
 
2016
 
2017
 
Beginning balance
 
 
(291)
 
 
(4,559)
 
 
(9,851)
 
Additions
 
 
(4,268)
 
 
(5,292)
 
 
(6,748)
 
Write-off
 
 
 
 
 
 
 
Ending balance
 
 
(4,559)
 
 
(9,851)
 
 
(16,599)