OTHER COMPREHENSIVE INCOME (LOSS) (Tables)

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Schedule of other comprehensive income loss

	Before		Tax		Net of
	Tax		(Expense)		Tax
(Dollars in Thousands)	Amount		Benefit		Amount
2017
Investment Securities:
Change in net unrealized gain/loss on securities available for sale	$	(1,459)	$	564	$	(895)
Amortization of losses on securities transferred from available for sale to
held to maturity		73		(29)		44
Total Investment Securities		(1,386)		535		(851)
Benefit Plans:
Reclassification adjustment for amortization of prior service cost		223		(86)		137
Reclassification adjustment for amortization of net loss		4,409		(1,622)		2,787
Current year actuarial loss		(3,470)		1,159		(2,311)
Total Benefit Plans		1,162		(549)		613
Total Other Comprehensive Loss	$	(224)	$	(14)	$	(238)
2016
Investment Securities:
Change in net unrealized gain/loss on securities available for sale	$	(828)	$	322	$	(506)
Amortization of losses on securities transferred from available for sale to
held to maturity		82		(32)		50
Total Investment Securities		(746)		290		(456)
Benefit Plans:
Reclassification adjustment for amortization of prior service cost		278		(107)		171
Reclassification adjustment for amortization of net loss		3,960		(1,528)		2,432
Current year actuarial loss		(9,958)		3,843		(6,115)
Total Benefit Plans		(5,720)		2,208		(3,512)
Total Other Comprehensive Loss	$	(6,466)	$	2,498	$	(3,968)
2015
Investment Securities:
Change in net unrealized gain/loss on securities available for sale	$	(373)	$	143	$	(230)
Amortization of losses on securities transferred from available for sale to
held to maturity		76		(31)		45
Total Investment Securities		(297)		112		(185)
Benefit Plans:
Reclassification adjustment for amortization of prior service cost		316		(122)		194
Reclassification adjustment for amortization of net loss		3,743		(1,444)		2,299
Current year actuarial loss		(4,975)		1,919		(3,056)
Total Benefit Plans		(916)		353		(563)
Total Other Comprehensive Loss	$	(1,213)	$	465	$	(748)

Activity in accumulated other comprehensive loss, net of tax

Accumulated other comprehensive loss was comprised of the following components:
					Accumulated
	Securities				Other
	Available		Retirement		Comprehensive
(Dollars in Thousands)	for Sale		Plans		Loss
Balance as of January 1, 2017	$	(583)	$	(25,642)	$	(26,225)
Other comprehensive loss during the period		(851)		613		(238)
Adoption of ASU No. 2018-02		(309)		(5,272)		(5,581)
Balance as of December 31, 2017	$	(1,743)	$	(30,301)	$	(32,044)
Balance as of January 1, 2016	$	(127)	$	(22,130)	$	(22,257)
Other comprehensive loss during the period		(456)		(3,512)		(3,968)
Balance as of December 31, 2016	$	(583)	$	(25,642)	$	(26,225)
Balance as of January 1, 2015	$	59	$	(21,568)	$	(21,509)
Other comprehensive income (loss) during the period		(186)		(562)		(748)
Balance as of December 31, 2015	$	(127)	$	(22,130)	$	(22,257)