BUSINESS COMBINATION (Tables)

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

	Fair Value as Originally		Measurement Period		Fair Value as
(In thousands)	Recorded		Adjustments		Remeasured
Total purchase price consideration	$	1,277,626	$	2,798	$	1,280,424
Fair value of assets acquired:
Cash and cash equivalents	$	1,684,252	$	-	$	1,684,252
Investment securities		1,167,225		-		1,167,225
Residential mortgage loans		807,637		(216)		807,421
Commercial mortgage loans		740,919		-		740,919
Commercial and Industrial loans		752,154		-		752,154
Consumer loans		214,206		-		214,206
Loans, net		2,514,916		(216)		2,514,700
Premises and equipment, net		12,499		-		12,499
Intangible assets		39,232		-		39,232
Other assets		144,008		(352)		143,656
Total assets and identifiable
intangible assets acquired		5,562,132		(568)		5,561,564
Fair value of liabilities assumed:
Deposits	$	4,194,940	$	-	$	4,194,940
Other liabilities		95,869		865		96,734
Total liabilities assumed		4,290,809		865		4,291,674
Fair value of net assets and identifiable
intangible assets acquired		1,271,323		(1,433)		1,269,890
Goodwill	$	6,303	$	4,231	$	10,534

Business Acquisition, Pro Forma Information [Table Text Block]

	Unaudited Pro Forma Results
		Year Ended	Year Ended
		December 31,	December 31,
(In thousands)		2020	2019
Net interest income	$	722,556	$	789,938
Non-interest income		132,180		129,303
Net income		183,972		213,311