EARNINGS PER SHARE (Tables)

9 Months Ended

Sep. 30, 2015

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 three and nine months ended September 30, 2015 and 2014:

	Three Months Ended September 30,						Nine Months Ended September 30,
(000's omitted, except per share data)	2015			2014			2015			2014
Net income	$	25,022		$	22,371		$	71,159		$	68,220
Income attributable to unvested stock-based compensation awards		(129	)		(115	)		(352	)		(337	)
Income available to common shareholders		24,893			22,256			70,807			67,883
Weighted-average common shares outstanding – basic		40,873			40,596			40,741			40,543
Basic earnings per share	$	0.61		$	0.55		$	1.74		$	1.67
Net income	$	25,022		$	22,371		$	71,159		$	68,220
Income attributable to unvested stock-based compensation awards		(129	)		(115	)		(352	)		(337	)
Income available to common shareholders		24,893			22,256			70,807			67,883
Weighted-average common shares outstanding – basic		40,873			40,596			40,741			40,543
Assumed exercise of stock options		386			453			400			482
Weighted-average common shares outstanding – diluted		41,259			41,049			41,141			41,025
Diluted earnings per share	$	0.60		$	0.54		$	1.72		$	1.65