EMPLOYEE 401(K) PLAN (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Defined Contribution Plan [Line Items]
Employer matching contribution (in percent)	50.00%
Maximum employee annual salary contribution (in percent)	15.00%
Maximum employee annual salary contribution amount	$ 16,500
Employer contribution	$ 200,000	$ 200,000	$ 200,000
Maximum [Member]
Defined Contribution Plan [Line Items]
Maximum annual contribution per employee (in percent)	6.00%