Other Comprehensive Income

12 Months Ended

Dec. 31, 2020

OTHER COMPREHENSIVE INCOME

The gross amounts of each component of other comprehensive income and the related tax effects for the periods indicated are as follows:


Year Ended December 31, 2020	Before Tax Amount		Tax Expense (Benefit)		Net of Tax Amount
Investment securities available-for sale:
Change in net unrealized gains during period	$	61.8	$	15.8	$	46.0
Reclassification adjustment for net gains included in net income	(0.3)		(0.1)		(0.2)

Change in net unrealized loss on derivatives	0.2		—		0.2

Defined benefits post-retirement benefit plan:
Change in net actuarial gains	(0.5)		(0.1)		(0.4)
Total other comprehensive income	$	61.2	$	15.6	$	45.6


Year Ended December 31, 2019	Before Tax Amount		Tax Expense (Benefit)		Net of Tax Amount
Investment securities available-for sale:
Change in net unrealized gains during period	$	54.9	$	14.1	$	40.8
Reclassification adjustment for net gains included in net income	(0.1)		—		(0.1)
Reclassification adjustment for securities transferred from held-to-maturity to available-for-sale	(6.0)		(1.6)		(4.4)



Defined benefits post-retirement benefit plan:
Change in net actuarial gains	(0.8)		(0.1)		(0.7)
Total other comprehensive income	$	48.0	$	12.4	$	35.6


Year Ended December 31, 2018	Before Tax Amount		Tax Expense (Benefit)		Net of Tax Amount
Investment securities available-for sale:
Change in net unrealized loss during period	$	(13.9)	$	(3.6)	$	(10.3)
Reclassification adjustment for net loss included in net income	0.1		—		0.1
Change in unamortized loss on available-for-sale securities transferred into held-to-maturity	1.6		0.4		1.2


Defined benefits post-retirement benefit plan:
Change in net actuarial loss	(0.6)		(0.1)		(0.5)
Total other comprehensive loss	$	(12.8)	$	(3.3)	$	(9.5)

The components of accumulated other comprehensive income, net of income taxes, are as follows:


Year ended December 31,	2020		2019
Net unrealized gain on investment securities available-for-sale	$	56.8	$	10.6
Net unrealized loss on derivatives	(0.2)		—
Net actuarial gain on defined benefit post-retirement benefit plans	—		0.4
Net accumulated other comprehensive income (loss)	$	56.6	$	11.0