EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Schedule of weighted average number of shares

Following are the factors used in the earnings per share computations:

	2012		2011		2010
Basic earnings per common share:
Net income	$	35,394,000	$	30,662,000	$	24,543,000
Less:   Dividends and accretion of discount on preferred stock		0		0		3,187,000
Net income available to common shareholders	$	35,394,000	$	30,662,000	$	21,356,000
Weighted-average common shares outstanding		16,323,870		16,204,952		16,120,606
Basic earnings per common share	$	2.17	$	1.89	$	1.32
Diluted earnings per common share:
Net income	$	35,394,000	$	30,662,000	$	24,543,000
Less:   Dividends and accretion of discount on preferred stock		0		0		3,187,000
Net income available to common shareholders	$	35,394,000	$	30,662,000	$	21,356,000
Weighted-average common shares outstanding for basic earnings per common share		16,323,870		16,204,952		16,120,606
Add: Dilutive effect of assumed exercise of Warrant		38,224		10,370		0
Add: Dilutive effect of assumed exercises of stock options and awards		120,843		109,322		93,141
Average shares and dilutive potential common shares		16,482,937		16,324,644		16,213,747
Diluted earnings per common share	$	2.15	$	1.88	$	1.32