FAIR VALUE MEASUREMENTS (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total gain of the Rabbi Trust investment	$ 2,395,000	$ 1,848,000
Unrealized gains (losses)	1,995,000	1,706,000
Assets subject to fair value measurement on a nonrecurring basis			0
Liabilities subject to fair value measurement on a nonrecurring basis			0
Fair Value, Measurements, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loss on impairment of long-lived assets	2,987,000
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets subject to fair value measurement on a nonrecurring basis	$ 2,280,000