RETIREMENT AND POSTRETIREMENT PLANS (Tables)

12 Months Ended

Dec. 31, 2021

Employee Retirement Plan

Defined Benefit Plan Disclosure [Line Items]

Schedule of funded status of defined benefit plan

	Year Ended December 31,
(In thousands)	2021		2020
Reconciliation of projected benefit obligation:
Projected benefit obligation at beginning of year	$	26,891	$	25,405
Interest cost		562		732
Actuarial (gain) loss		(903)		2,204
Benefit payments		(1,589)		(1,450)
Projected benefit obligation at end of year		24,961		26,891
Plan assets at fair value (investments in trust funds managed by trustee)
Balance at beginning of year		27,142		25,202
Return on plan assets		3,140		3,390
Benefit payments		(1,589)		(1,450)
Balance at end of year		28,693		27,142
Funded status at end of year	$	3,732	$	251

Schedule of net periodic cost of defined benefit plan

	Year Ended December 31,
(In thousands)	2021		2020		2019
Interest cost	$	562	$	732	$	901
Expected return on plan assets		(1,846)		(1,713)		(1,528)
Amortization of unrealized loss		824		914		913
Net periodic benefit (credit) cost	$	(460)	$	(67)	$	286

Schedule of change in accumulated other comprehensive loss

	Year Ended December 31,
(In thousands)	2021		2020
Balance at beginning of period	$	(7,119)	$	(7,506)
Amortization of unrealized loss		825		914
Gain (loss) recognized during the year		2,197		(527)
Balance at the end of the period	$	(4,097)	$	(7,119)
Period end component of accumulated other comprehensive loss, net of tax	$	2,808	$	4,858

Schedule of major assumptions utilized to determine the net periodic cost of the Employee Retirement Plan benefit obligations

	At or for the Year Ended December 31,
	2021		2020		2019
Discount rate used for net periodic benefit cost	2.55	%	2.97	%	4.04	%
Discount rate used to determine benefit obligation at period end	2.55		2.15		2.97
Expected long-term return on plan assets used for net periodic benefit cost	7.00		7.00		7.00
Expected long-term return on plan assets used to determine benefit obligation at period end	7.00		7.00		7.00

Summary of plan asset allocation by asset category

	December 31,
	2021		2020
Asset category
Equity securities	54	%	67	%
Debt securities (bond mutual funds)	42		30
Cash equivalents	4		3
Total	100	%	100	%

Summary of fair values of the plan assets

	December 31, 2021
	Fair Value Measurements Using:
	Quoted
	Prices in		Significant
	Active Markets for		Other		Significant
	Identical		Observable		Unobservable
(In thousands)	Assets (Level 1)		Inputs (Level 2)		Inputs (Level 3)		Total
Description:
Cash and cash equivalents	$	—	$	1,001	$	—	$	1,001
Equities:
U.S. large cap		8,579		—		—		8,579
U.S. mid cap/small cap		2,896		—		—		2,896
International		3,560		—		—		3,560
Equities blend		479		—		—		479
Fixed income securities:
Corporate		—		1,288		—		1,288
Government		1,406		—		—		1,406
Mortgage-backed		—		1,858		—		1,858
High yield bonds and bond funds		—		7,626		—		7,626
Total Plan Assets	$	16,920	$	11,773	$	—	$	28,693

	December 31, 2020
	Fair Value Measurements Using:
	Quoted
	Prices in		Significant
	Active Markets for		Other		Significant
	Identical		Observable		Unobservable
(In thousands)	Assets (Level 1)		Inputs (Level 2)		Inputs (Level 3)		Total
Description:
Cash and cash equivalents	$	720	$	—	$	—	$	720
Mutual Funds (all registered and publicly traded) :
U.S. Large Cap		3,336		—		—		3,336
U.S. Mid Cap		1,571		—		—		1,571
U.S. Small Cap		618		—		—		618
International Equity		4,678		—		—		4,678
Fixed income		8,300		—		—		8,300
Common collective investment funds:
U.S. Large Cap		—		5,564		—		5,564
U.S. Mid Cap		—		742		—		742
U.S. Small Cap		—		1,613		—		1,613
Total Plan Assets	$	19,223	$	7,919	$	—	$	27,142

Schedule of expected benefit payments maturities

Year Ended December 31,	Amount
2022	$	1,501
2023		1,490
2024		1,477
2025		1,412
2026		1,368
2027 to 2031		6,503

Retirement Plans [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of funded status of defined benefit plan

	Year Ended December 31,
(In thousands)	2021
Reconciliation of projected benefit obligation:
Projected benefit obligation at beginning of year	$	—
Acquired in the Merger		33,897
Service cost		893
Interest cost		609
Actuarial gain		(304)
Benefit payments		(600)
Projected benefit obligation at end of year		34,495
Plan assets at fair value (investments in trust funds managed by trustee)
Balance at beginning of year		—
Acquired in the Merger		43,685
Return on plan assets		4,772
Benefit payments		(600)
Balance at end of year		47,857
Funded status at end of year	$	13,362

Schedule of net periodic cost of defined benefit plan

	Year Ended December 31,
(In thousands)	2021
Service cost	$	893
Interest cost		609
Expected return on plan assets		(2,883)
Net periodic benefit credit	$	(1,381)

Schedule of change in accumulated other comprehensive loss

	Year Ended December 31,
(In thousands)	2021
Balance at beginning of period	$	—
Gain recognized during the year		2,193
Balance at the end of the period	$	2,193
Period end component of accumulated other comprehensive income, net of tax	$	(1,503)

Schedule of major assumptions utilized to determine the net periodic cost of the Employee Retirement Plan benefit obligations

	At or for the Year Ended December 31,
	2021
Discount rate used for net periodic benefit cost	2.69	%
Discount rate used to determine benefit obligation at period end	2.69
Expected long-term return on plan assets used for net periodic benefit cost	7.25
Expected long-term return on plan assets used to determine benefit obligation at period end	7.25

Summary of plan asset allocation by asset category

	December 31,
	2021
Asset category
Equity securities	60	%
Debt securities (bond mutual funds)	37
Cash equivalents	3
Total	100	%

Summary of fair values of the plan assets

	December 31, 2021
	Fair Value Measurements Using:
	Quoted
	Prices in		Significant
	Active Markets for		Other		Significant
	Identical		Observable		Unobservable
(In thousands)	Assets (Level 1)		Inputs (Level 2)		Inputs (Level 3)		Total
Description:
Cash and cash equivalents	$	—	$	1,581	$	—	$	1,581
Equities:
U.S. large cap		13,623		—		—		13,623
U.S. mid cap/small cap		5,669		—		—		5,669
International		8,332		—		—		8,332
Equities blend		900		—		—		900
Fixed income securities:
Corporate		—		1,696		—		1,696
Government		1,700		—		—		1,700
Mortgage-backed		—		2,549		—		2,549
High yield bonds and bond funds		—		11,807		—		11,807
Total Plan Assets	$	30,224	$	17,633	$	—	$	47,857

Schedule of expected benefit payments maturities

Year Ended December 31,	Amount
2022	$	1,119
2023		1,264
2024		1,274
2025		1,360
2026		1,563
2027 to 2031		9,153

BMP and Outside Director Retirement Plan

Defined Benefit Plan Disclosure [Line Items]

Schedule of funded status of defined benefit plan

	Year Ended December 31,
(In thousands)	2021		2020
Reconciliation of projected benefit obligation:
Projected benefit obligation at beginning of year	$	9,328	$	9,360
Interest cost		12		234
Benefit payments		(9,063)		(771)
Actuarial (gain) loss		(277)		505
Projected benefit obligation at end of year		—		9,328
Plan assets at fair value:
Balance at beginning of year		—		—
Contributions		9,063		771
Benefit payments		(9,063)		(771)
Balance at end of period		—		—
Funded status at end of year	$	—	$	(9,328)

Schedule of net periodic cost of defined benefit plan

	Year Ended December 31,
(In thousands)	2021		2020		2019
Interest cost	$	12	$	234	$	351
Curtailment loss		1,543		—		—
Amortization of unrealized loss		—		179		59
Net periodic benefit cost	$	1,555	$	413	$	410

Schedule of change in accumulated other comprehensive loss

	Year Ended December 31,
(In thousands)	2021		2020
Balance at beginning of year	$	(1,820)	$	(1,494)
Amortization of unrealized loss		—		179
Gain (loss) recognized during the year		277		(505)
Curtailment credit		1,543		—
Balance at the end of year	$	—	$	(1,820)
Period end component of accumulated other comprehensive loss, net of tax	$	—	$	1,228

Schedule of major assumptions utilized to determine the net periodic cost of the Employee Retirement Plan benefit obligations

	At or For the Year Ended December 31,
	2020		2019
Discount rate used for net periodic benefit cost – BMP	2.60	%	3.80	%
Discount rate used for net periodic benefit cost – Director Retirement Plan	2.68		3.84
Discount rate used to determine BMP benefit obligation at year end	1.55		2.60
Discount rate used to determine Director Retirement Plan benefit obligation at year end	1.69		2.68

POSTRETIREMENT PLANS

Defined Benefit Plan Disclosure [Line Items]

Schedule of funded status of defined benefit plan

	Year Ended December 31,
(In thousands)		2021		2020
Reconciliation of projected benefit obligation:
Projected benefit obligation at beginning of year	$	13	$	1,608
Interest cost		—		42
Actuarial loss		—		105
Curtailment gain		—		(1,577)
Benefit payments		(13)		(165)
Projected benefit obligation at end of year		—		13
Plan assets at fair value:
Balance at beginning of year		—		—
Contributions		13		165
Benefit payments		(13)		(165)
Balance at end of period		—		—
Funded status at end of year	$	—	$	(13)

Schedule of net periodic cost of defined benefit plan

	Year Ended December 31,
(In thousands)	2020		2019
Interest cost	$	42	$	56
Curtailment gain		1,651		—
Amortization of unrealized loss		(9)		(20)
Net periodic benefit cost	$	1,684	$	36

Schedule of change in accumulated other comprehensive loss

		Year Ended December 31,
(In thousands)	2020
Balance at beginning of period	$	188
Amortization of unrealized loss		(9)
Recognition of prior service cost		(74)
Loss recognized during the year		(105)
Balance at the end of the period	$	—
Period end component of accumulated other comprehensive loss, net of tax	$	—

Schedule of major assumptions utilized to determine the net periodic cost of the Employee Retirement Plan benefit obligations

	At or For the Year Ended December 31,
	2020		2019
Discount rate used for net periodic benefit cost	2.69	%	3.82	%
Discount rate used to determine benefit obligation at period end	0.29		2.69