COMMON STOCK ACTIVITY (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares outstanding at beginning of year (in shares)	29,928,490
Common stock offerings (in shares)	890,085	2,179,153	586,977
Dividend reinvestment plan (in shares)	3,577	3,915	5,989
Shares outstanding at end of year (in shares)	30,937,225	29,928,490
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares outstanding at beginning of year (in shares)	29,928,490	27,658,059	26,973,531
Common stock offerings (in shares)	890,085	2,179,153	586,977
Stock options exercised (in shares)	4,500	4,500	9,250
Dividend reinvestment plan (in shares)	3,577	3,915	5,989
Incentive restricted stock granted (in shares)	112,099	111,732	79,491
Incentive restricted stock forfeited (in shares)	0	0	(233)
Director common stock awarded (in shares)	7,469	7,326	6,618
Restricted stock granted to directors (in shares)	417	0	0
Restricted stock withheld for tax obligations (in shares)	(9,412)	(36,195)	(3,564)
Shares outstanding at end of year (in shares)	30,937,225	29,928,490	27,658,059
Common Stock Repurchase Plan [Abstract]
Proceeds from issuance of common stock common equity program	$ 53,200,000	$ 109,600,000	$ 25,200,000
Common stocks outstanding authorized to be repurchased (in shares)	1,500,000
Treasury stock shares acquired	827,700
Total cost of shares repurchased	$ 14,170,000
Average cost per share of shares of common stock purchased (in dollar per share)	$ 17.12