COMMITMENTS AND CONTINGENCIES (Schedule of Swapped Variable Cost for Fixed Cost and Terms of Interest Rate Swap Agreements) (Details) (Interest rate swaps, USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Contract, One	Mar. 31, 2013 Contract, Two	Mar. 31, 2013 Contract, Three	Mar. 31, 2013 Contract, Four	Mar. 31, 2013 Contract, Five
Derivative [Line Items]
Notional Amount	$ 43,000	$ 43,000	$ 10,000	$ 10,000	$ 10,000	$ 5,000	$ 8,000
Fixed Cost			5.09%	5.84%	5.71%	4.35%	4.14%
Maturity Date			Jun. 30, 2021	Jun. 30, 2029	Jun. 30, 2030	Mar. 30, 2031	Jul. 07, 2031