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Tax Effects of Temporary Differences that Give Rise to Deferred Tax Balances (Detail)
In Thousands, unless otherwise specified
Dec. 31, 2012
USD ($)
Dec. 31, 2012
CNY
Dec. 31, 2011
CNY
Schedule of Deferred Income Tax Assets and Liabilities [Line Items]      
Provision for doubtful receivables $ 266 1,655 2,586
Fixed assets depreciation 2,146 13,367 36,274
Net operating loss carry-forward 53,514 333,397 248,790
Accrued expenses, payroll and others 34,382 214,211 140,805
Deferred tax assets 90,308 562,630 428,455
Valuation allowance (56,020) (349,012) (254,919)
Deferred tax assets, net 34,288 213,618 173,536
Long-lived assets arising from acquisitions 46,465 289,482 131,629
Deferred tax liabilities $ 46,465 289,482 131,629