DEBT (Revolving Credit Agreement) (Details) (Revolving credit agreement, USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended	12 Months Ended
	Jul. 31, 2012	Dec. 31, 2012	Dec. 31, 2012
Revolving credit agreement
Debt
Borrowing capacity under the line of credit		$ 300,000	$ 300,000
Credit agreement initiation date	Jul. 26, 2012
Credit facility covenant compliance			As of December 31, 2012, the Company was in compliance with all of its covenants
Term of the credit agreement (in years)		5 years
Additional increase in borrowing capacity of the line of credit available at the entity's option		$ 100,000	$ 100,000