BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 6)	12 Months Ended
	Dec. 31, 2011 D
Cash and Cash Equivalents and Short-Term Investments
Maximum original maturity period for classification as cash and cash equivalents (in days)	90
Minimum
Cash and Cash Equivalents and Short-Term Investments
Deposits in banks with original maturity period for classification as short-term investments (in days)	91
Maximum
Cash and Cash Equivalents and Short-Term Investments
Deposits in banks with original maturity period for classification as short-term investments (in days)	365