EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2011

EARNINGS PER SHARE [Abstract]

Reconciliation of basic to diluted earnings per share

The following is a reconciliation of basic to diluted earnings per share for the years ended December 31, 2011, 2010 and 2009.

(000's omitted, except per share data)	2011	2010	2009
Net income	$73,142	$63,320	$41,445
Income attributable to unvested stock-based compensation awards	(553)	(542)	(215)
Income available to common shareholders	$72,589	$62,778	$41,230
Weighted-average common shares outstanding - basic	35,767	32,951	32,673
Basic earnings per share	$2.03	$1.91	$1.26
Net income	$73,142	$63,320	$41,445
Income attributable to unvested stock-based compensation awards	(553)	(542)	(215)
Income available to common shareholders	$72,589	$62,778	$41,230
Weighted-average common shares outstanding	35,767	32,951	32,673
Assumed exercise of stock options	415	318	148
Weighted-average common shares outstanding – diluted	36,182	33,269	32,821
Diluted earnings per share	$2.01	$1.89	$1.26