STOCK BASED COMPENSATION (Details) (USD $)	12 Months Ended					1 Months Ended		12 Months Ended		1 Months Ended				12 Months Ended		1 Months Ended			12 Months Ended		12 Months Ended			12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Mar. 09, 2012	Feb. 01, 2012	Feb. 29, 2012 Restricted Stock [Member]	Feb. 28, 2011 Restricted Stock [Member]	Dec. 31, 2012 Restricted Stock [Member]	Dec. 31, 2011 Restricted Stock [Member]	Jan. 31, 2011 Restricted Stock [Member] Executive Officer [Member]	Jan. 31, 2010 Restricted Stock [Member] Executive Officer [Member]	Apr. 30, 2009 Restricted Stock [Member] Executive Officer [Member]	Apr. 30, 2008 Restricted Stock [Member] Executive Officer [Member]	Dec. 31, 2012 Restricted Stock [Member] Minimum [Member]	Dec. 31, 2012 Restricted Stock [Member] Maximum [Member]	Jan. 31, 2013 Unrestricted stock [Member] Independent Director [Member]	Jan. 31, 2012 Unrestricted stock [Member] Independent Director [Member]	Jan. 31, 2011 Unrestricted stock [Member] Independent Director [Member]	Dec. 31, 2012 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2012 Time Based Restricted Stock Units [Member]	Dec. 31, 2012 Time Based Restricted Stock Units [Member] Executive Officer [Member]	Dec. 31, 2012 Time Based Restricted Stock Units [Member] Top Executives [Member]	Dec. 31, 2012 Absolute Performance Based Restricted Stock Units [Member]	Dec. 31, 2012 Absolute Performance Based Restricted Stock Units [Member] Executive Officer [Member]	Dec. 31, 2012 Absolute Performance Based Restricted Stock Units [Member] Top Executives [Member]	Dec. 31, 2012 Relative Performance Based Restricted Stock Units [Member]	Dec. 31, 2012 Relative Performance Based Restricted Stock Units [Member] Executive Officer [Member]	Dec. 31, 2012 Relative Performance Based Restricted Stock Units [Member] Top Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period														3 years	4 years						3 years	1 year		3 years	1 year		3 years	1 year
Number of shares received by independent directors (in shares)																6,708	5,712	4,434
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00																	$ 1.00
Number of key individuals	10
Shares available for grant on attainment of performance targets (in shares)																			81,875
Shares [Roll Forward]
Non-vested - Beginning of Period (in shares)								87,500	132,500										0
Unrestricted Shares Granted (in shares)								5,712	51,934	47,500	47,500	47,500	175,000						65,500
Shares Vested (in shares)						40,000	45,000	(93,212)	(96,934)										0
Shares Forfeited (in shares)								0	0
Non-vested - End of Period (in shares)								0	87,500										65,500
Weighted Average Fair Value Per Share [Roll Forward]
Non-vested - Beginning of Period (in dollars per share)								$ 22.92	$ 22.38										$ 0
Unrestricted Shares Granted (in dollars per share)								$ 21.01	$ 26.27										$ 21.48
Shares Vested (in dollars per share)								$ 22.79	$ 23.98										$ 0
Non-vested - End of Period (in dollars per share)								$ 0	$ 22.92										$ 21.48
Stock-based compensation expense included before tax	$ 420,000	$ 1,801,000	$ 2,341,000																$ 797,000
Stock-based compensation expense included in net income	$ 273,000	$ 1,171,000	$ 1,522,300																$ 518,000
Impact of stock based compensation expense on basic earnings per share (in dollars per share)	$ 0.04	$ 0.16	$ 0.21
Impact of stock based compensation expense on diluted earnings per share (in dollars per share)	$ 0.04	$ 0.16	$ 0.21
Impact of stock based compensation expense on basic and diluted earnings per share (in dollars per share)																			$ 0.07
Number of shares of common stock retired to meet tax liabilities (in shares)				16,439	13,665
Maximum shares allocated to each share based compensation unit (in shares)																				1			1.5			1.5
Number of top executives																			2