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Tax Effects of Temporary Differences that Give Rise to Deferred Tax Balances (Detail)
In Thousands, unless otherwise specified
Dec. 31, 2011
USD ($)
Dec. 31, 2011
CNY
Dec. 31, 2010
CNY
Schedule of Deferred Income Tax Assets and Liabilities [Line Items]      
Provision for doubtful receivables $ 411 2,586 1,964
Fixed assets depreciation 5,763 36,274 41,089
Net operating loss carry-forward 39,529 248,790 173,644
Accrued expenses, payroll and others 22,372 140,805 80,592
Deferred tax assets 68,075 428,455 297,289
Valuation allowance (40,503) (254,919) (179,959)
Deferred tax assets, net 27,572 173,536 117,330
Intangible assets arising from business combinations 20,914 131,629 0
Deferred tax liabilities $ 20,914 131,629 0