EMPLOYEE STOCK PLANS - Employee Savings Plan and Deferred Compensation Plan (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Defined contribution plan, employer discretionary contribution amount	$ 200,000	$ 100,000	$ 0
Deferred compensation plan assets	$ 44,000	$ 200,000