INDEBTEDNESS (Schedule of Credit Agreement) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Total borrowed	$ 113,125
Credit Agreement [Member]
Debt Instrument [Line Items]
Total borrowed	113,125	119,000
Term Facility [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Total borrowed	48,125	50,000
Maximum available to be borrowed under revolving facility	50,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum available to be borrowed under revolving facility	135,000	131,000
Revolving Credit Facility [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Total borrowed	65,000	69,000
Maximum available to be borrowed under revolving facility	$ 200,000
LIBOR [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Interest margin	2.00%	2.00%
Actual interest rates	2.19%	2.19%