SHAREHOLDERS' EQUITY (Tables)

12 Months Ended

Dec. 31, 2017

Summary of Accumulated Other Comprehensive Income (Loss) to Net Income Balances

The following is a summary of accumulated other comprehensive income (loss) to net income balances:

	Unrealized Gains (Losses) on Securities Available for Sale			Disproportionate Tax Effect from Securities Available for Sale			Unrealized Gains (Losses) on Held to Maturity			Total
2017	(Dollars in thousands)
Balances at beginning of period, net of tax	$	(3,130	)	$	(17,110	)	$	(800	)	$	(21,040	)
Other comprehensive loss before reclassifications		2,946			—			—			2,946
Accretion of unrealized losses transferred from available for sale to held to maturity recognized in other comprehensive income		—			—			129			129
Reclassification adjustment for gains realized in income		(368	)		—			—			(368	)
Net current period other comprehensive income		2,578			—			129			2,707
Reclassification from adoption of ASU 2018-02		(352	)		—			—			(352	)
Balances at end of period, net of tax	$	(904	)	$	(17,110	)	$	(671	)	$	(18,685	)

	Unrealized Gains (Losses) on Securities Available for Sale			Disproportionate Tax Effect from Securities Available for Sale			Unrealized Gains (Losses) on Held to Maturity			Unrealized Gains (Losses) from Postretirement Plan			Disproportionate Tax Effect from Postretirement Plan			Total
2016	(Dollars in thousands)
Balances at beginning of period, net of tax	$	(2,492	)	$	(17,110	)	$	(960	)	$	831		$	511		$	(19,220	)
Transfer of losses from available for sale to held to maturity		(245	)		—			—			—			—			(245	)
Other comprehensive income before reclassifications		—			—			—			(831	)		(511	)		(1,342	)
Accretion of unrealized losses transferred from available for sale to held to maturity recognized in other comprehensive income		—			—			160			—			—			160
Reclassification adjustment for gains realized in income		(393	)		—			—						—			(393	)
Net current period other comprehensive income		(638	)		—			160			(831	)		(511	)		(1,820	)
Balances at end of period, net of tax	$	(3,130	)	$	(17,110	)	$	(800	)	$	—		$	—		$	(21,040	)

	Unrealized Gains (Losses) on Securities Available for Sale			Disproportionate Tax Effect from Securities Available for Sale			Unrealized Gains (Losses) on Held to Maturity			Unrealized Gains (Losses) from Postretirement Plan			Disproportionate Tax Effect from Postretirement Plan		Total
2015	(Dollars in thousands)
Balances at beginning of period, net of tax	$	(4,315	)	$	(17,110	)	$	—		$	916		$	511	$	(19,998	)
Transfer of losses from available for sale to held to maturity		999			—			(999	)		—			—		—
Other comprehensive income before reclassifications		916			—			—			120			—		1,036
Accretion of unrealized losses transferred from available for sale to held to maturity recognized in other comprehensive income		—			—			39			—			—		39
Reclassification adjustment for gains realized in income		(92	)		—			—			(205	)		—		(297	)
Net current period other comprehensive income		1,823			—			(960	)		(85	)		—		778
Balances at end of period, net of tax	$	(2,492	)	$	(17,110	)	$	(960	)	$	831		$	511	$	(19,220	)

Summary of Reclassification Out of Each Component of Accumulated Comprehensive Income (Loss) to Net Income

The following is significant amounts reclassified out of each component of accumulated comprehensive income (loss) to net income for the year ended December 31, 2017:

		Amount Reclassified
		From Accumulated
Details About Accumulated Other		Other Comprehensive			Affected Line Item on the Statement Where
Comprehensive Income Components		Income to Net Income			Net Income is Presented
	(Dollars in thousands)
Realized net gains on the sale of available for sale securities		$	566		Net gains on securities available for sale
			(198	)	Tax (expense) benefit
Total reclassification during the period		$	368		Increase to net income

The following is significant amounts reclassified out of each component of accumulated comprehensive income (loss) to net income for the year ended December 31, 2016:

		Amount Reclassified
		From Accumulated
Details About Accumulated Other		Other Comprehensive			Affected Line Item on the Statement Where
Comprehensive Income Components		Income to Net Income			Net Income is Presented
	(Dollars in thousands)
Realized net gains on the sale of available for sale securities		$	604		Net gains on securities available for sale
			(211	)	Tax (expense) benefit
			393		Net of tax
Amortization of postretirement benefits prior service costs			1,278		Reduction of salaries & employee benefits expense
			(447	)	Tax (expense) benefit
			511		Disproportionate tax benefit effect from plan settlement
			1,342		Net of tax
Total reclassification during the period		$	1,735		Increase to net income

The following is significant amounts reclassified out of each component of accumulated comprehensive income (loss) for the year ended December 31, 2015:

		Amount Reclassified
		From Accumulated
Details About Accumulated Other		Other Comprehensive			Affected Line Item on the Statement Where
Comprehensive Income Components		Income to Net Income			Net Income is Presented
	(Dollars in thousands)
Realized net gains on the sale of available for sale securities		$	142		Net gains on securities available for sale
			(50	)	Tax (expense) benefit
			92		Net of tax
Amortization of postretirement benefits prior service costs			315		Reduction of salaries & employee benefits expense
			(110	)	Tax (expense) benefit
			205		Net of tax
Total reclassification during the period		$	297		Increase to net income