EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Computation of Earnings Per Share

	Twelve months ended December 31,
	2017			2016			2015
	(In thousands, except per share data)
Net income per consolidated statements of income	$	21,785		$	18,828		$	16,282
Net income allocated to participating securities		(136	)		(121	)		(81	)
Net income allocated to common stock	$	21,649		$	18,707		$	16,201
Basic earnings per common share computation:
Distributed earnings allocated to common stock	$	6,919		$	5,140		$	3,350
Undistributed earnings allocated to common stock		14,730			13,567			12,851
Net earnings allocated to common stock	$	21,649		$	18,707		$	16,201
Weighted average common shares outstanding, including shares    considered participating securities		49,459			46,967			48,320
Less: Average participating securities		(309	)		(301	)		(242	)
Weighted average shares		49,150			46,666			48,078
Basic earnings per common share	$	0.44		$	0.40		$	0.34
Diluted earnings per common share computation:
Net earnings allocated to common stock	$	21,649		$	18,707		$	16,201
Weighted average common shares outstanding for basic earnings    per common share		49,150			46,666			48,078
Add: Dilutive potential common shares		342			371			272
Weighted average shares and dilutive potential common shares		49,492			47,037			48,350
Diluted earnings per common share	$	0.44		$	0.40		$	0.34