INDEBTEDNESS (Narrative) (Details) (USD $)	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Line of Credit Facility [Line Items]
Percentage of issued and outstanding stock pledged of foreign subsidiaries as collateral for credit facilty	65.00%
Unused capacity, commitment fee percentage	0.40%
Borrowings on credit facility	$ 183,926,000	$ 192,885,000
Line of Credit Term A Loan [Member]
Line of Credit Facility [Line Items]
Borrowings on credit facility	50,000,000
Credit Facility Accordian Feature [Member]
Line of Credit Facility [Line Items]
Amount of credit facility	75,000,000
Line of Credit Revolver [Member]
Line of Credit Facility [Line Items]
Amount of credit facility	$ 250,000,000
Base Rate Loans [Member]
Line of Credit Facility [Line Items]
Applicable percentage	1.50%
London Interbank Offerd Rate Loans [Member]
Line of Credit Facility [Line Items]
Applicable percentage	2.50%
Interest rate at end of period	2.75%