COMMON STOCK (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Common Stock [Roll Forward]
Beginning balance (in shares)	68,334,860
New Issues During the Period:
Dividend Reinvestment Plan (in shares)	63,690
Stock-Based Compensation Plan (in shares)	25,398
Ending balance (in shares)	68,423,948
Par value of common stock (in dollars per share)	$ 1.25
Net excess over par value recorded in premium on common stock	$ 2,600,000
Incremental shares included in diluted EPS calculation (in shares)	220,762	154,448
Proceeds from sale of common stock	$ 1,857,000	$ 5,157,000