CERTAIN RISKS AND CONCENTRATION - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2012 Entity	Jun. 30, 2011 Entity	Jun. 30, 2012 Entity	Jun. 30, 2011 Entity
Concentration Risk [Line Items]
Number of customers with greater than ten percent revenue	2	1	2	2
Number of customers with greater than ten percent of total accounts receivable	2	1	2	1
Customer 1
Concentration Risk [Line Items]
Percentage of revenue by customer	25.10%	14.80%	25.90%	14.90%
Percentage of total accounts receivables	30.60%	33.60%	30.60%	33.60%
Customer 2
Concentration Risk [Line Items]
Percentage of revenue by customer	11.70%	13.00%	11.10%	13.00%
Percentage of total accounts receivables	10.30%		10.30%