Accumulated Other Comprehensive Income

The following tables summarize the changes in AOCI by component for the:



	Three Months Ended September 30
	2018												2017
	Unrealized Holding Gains (Losses) on AFS Securities			Unrealized Gains (Losses) on Derivative Instruments			Defined Benefit Pension Plan			Total			Unrealized Holding Gains (Losses) on AFS Securities			Unrealized Gains (Losses) on Derivative Instruments			Defined Benefit Pension Plan			Total
Balance, July 1	$	(7,295	)	$	351		$	(3,223	)	$	(10,167	)	$	2,923		$	135		$	(2,972	)	$	86
OCI before reclassifications	(2,513		)	7			—			(2,506		)	(96		)	11			—			(85		)
Amounts reclassified from AOCI	—			—			—			—			—			—			—			—
Subtotal	(2,513		)	7			—			(2,506		)	(96		)	11			—			(85		)
Tax effect	522			(2		)	—			520			54			(4		)	—			50
OCI, net of tax	(1,991		)	5			—			(1,986		)	(42		)	7			—			(35		)
Balance, September 30	$	(9,286	)	$	356		$	(3,223	)	$	(12,153	)	$	2,881		$	142		$	(2,972	)	$	51



	Nine Months Ended September 30
	2018												2017
	Unrealized Holding Gains (Losses) on AFS Securities			Unrealized Gains (Losses) on Derivative Instruments			Defined Benefit Pension Plan			Total			Unrealized Holding Gains (Losses) on AFS Securities			Unrealized Gains (Losses) on Derivative Instruments			Defined Benefit Pension Plan			Total
Balance, January 1	$	391		$	230		$	(3,223	)	$	(2,602	)	$	30		$	164		$	(2,972	)	$	(2,778	)
OCI before reclassifications	(12,548		)	160			—			(12,388		)	4,151			(33		)	—			4,118
Amounts reclassified from AOCI	—			—			—			—			(142		)	—			—			(142		)
Subtotal	(12,548		)	160			—			(12,388		)	4,009			(33		)	—			3,976
Tax effect	2,648			(34		)	—			2,614			(1,158		)	11			—			(1,147		)
OCI, net of tax	(9,900		)	126			—			(9,774		)	2,851			(22		)	—			2,829
Adoption of ASU 2016-01	223			—			—			223			—			—			—			—
Balance, September 30	$	(9,286	)	$	356		$	(3,223	)	$	(12,153	)	$	2,881		$	142		$	(2,972	)	$	51

Included in OCI for the three and nine month period ended September 30, 2018 are changes in unrealized holding gains and losses related to auction rate money market preferred stocks. For the three and nine month periods ended September 30, 2017, OCI includes changes in unrealized holding gains and losses related to auction rate money market preferred stocks and preferred stocks. For federal income tax purposes, these securities are considered equity investments. As such, no deferred federal income taxes related to unrealized holding gains or losses are expected or recorded.

A summary of the components of unrealized holding gains on AFS securities included in OCI follows for the:



	Three Months Ended September 30
	2018									2017
	Auction Rate Money Market Preferred Stocks			All Other AFS Securities			Total			Auction Rate Money Market Preferred and Preferred Stocks		All Other AFS Securities			Total
Unrealized gains (losses) arising during the period	$	(27	)	$	(2,486	)	$	(2,513	)	$	63	$	(159	)	$	(96	)
Reclassification adjustment for net (gains) losses included in net income	—			—			—			—		—			—
Net unrealized gains (losses)	(27		)	(2,486		)	(2,513		)	63		(159		)	(96		)
Tax effect	—			522			522			—		54			54
Unrealized gains (losses), net of tax	$	(27	)	$	(1,964	)	$	(1,991	)	$	63	$	(105	)	$	(42	)



	Nine Months Ended September 30
	2018								2017
	Auction Rate Money Market Preferred Stocks		All Other AFS Securities			Total			Auction Rate Money Market Preferred and Preferred Stocks		All Other AFS Securities			Total
Unrealized gains (losses) arising during the period	$	59	$	(12,607	)	$	(12,548	)	$	604	$	3,547		$	4,151
Reclassification adjustment for net (gains) losses included in net income	—		—			$	—		—		(142		)	$	(142	)
Net unrealized gains (losses)	59		(12,607		)	(12,548		)	604		3,405			4,009
Tax effect	—		2,648			2,648			—		(1,158		)	(1,158		)
Unrealized gains (losses), net of tax	$	59	$	(9,959	)	$	(9,900	)	$	604	$	2,247		$	2,851