Securities (Tables)

12 Months Ended

Dec. 31, 2020

Securities [Abstract]

Amortized Cost and Fair Value of Available-for-sale Securities

The amortized cost and fair value of debt securities at December 31, 2020 are summarized as follows:

Available-for-Sale

(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasury and government agencies	$	148,507	$	483	$	(197	)	$	148,793
State and political subdivisions		133,287		7,132		(3	)		140,416
U.S. government sponsored agency mortgage-backed securities		640,537		11,648		(378	)		651,807
Other debt securities		56,443		10		(208	)		56,245
Total available-for-sale securities	$	978,774	$	19,273	$	(786	)	$	997,261

The amortized cost and fair value of debt securities at December 31, 2019 are summarized as follows:

Available-for-Sale

(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasury and government agencies	$	171,250	$	476	$	(576	)	$	171,150
State and political subdivisions		99,403		2,941		(37	)		102,307
U.S. government sponsored agency mortgage-backed securities		291,874		4,443		(1,072	)		295,245
Other debt securities		31,418		0		(276	)		31,142
Total available-for-sale securities	$	593,945	$	7,860	$	(1,961	)	$	599,844

Amortized Cost and Fair Value of Held-to-maturity Securities

Held-to-Maturity

(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
State and political subdivisions	$	517	$	0	$	0	$	517
Total held-to-maturity securities	$	517	$	0	$	0	$	517

Amortized Cost and Fair Value of Debt Securities by Contractual Maturity

The amortized cost and fair value of debt securities at December 31, 2020 by contractual maturity are shown below.  Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

	Available-for-Sale
(in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	77,420	$	77,424
Due after one through five years		18,480		19,005
Due after five through ten years		96,870		98,417
Due after ten years		89,024		94,363
U.S. government sponsored agency mortgage-backed securities		640,537		651,807
Other debt securities		56,443		56,245
Total debt securities	$	978,774	$	997,261

Available for Sale Securities and Held-to-Maturity Securities, Continuous Unrealized Loss Position

CTBI evaluates its investment portfolio on a quarterly basis for impairment.  The analysis performed as of December 31, 2020 indicates that all impairment is considered temporary, market and interest rate driven, and not credit-related.  The percentage of total debt securities with unrealized losses as of December 31, 2020 was 16.2% compared to 42.8% as of December 31, 2019.  The following tables provide the amortized cost, gross unrealized losses, and fair market value, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position as of December 31, 2020 that are not deemed to have credit losses.  As stated above, CTBI had no HTM securities as of December 31, 2020.

Available-for-Sale

(in thousands)	Amortized Cost		Gross Unrealized Losses			Fair Value
Less Than 12 Months
U.S. Treasury and government agencies	$	5,604	$	(7	)	$	5,597
State and political subdivisions		534		(3	)		531
U.S. government sponsored agency mortgage-backed securities		58,463		(336	)		58,127
Other debt securities		22,660		(29	)		22,631
Total <12 months temporarily impaired AFS securities		87,261		(375	)		86,886
12 Months or More
U.S. Treasury and government agencies		46,163		(190	)		45,973
State and political subdivisions		0		0			0
U.S. government sponsored agency mortgage-backed securities		2,801		(42	)		2,759
Other debt securities		26,283		(179	)		26,104
Total ≥12 months temporarily impaired AFS securities		75,247		(411	)		74,836
Total
U.S. Treasury and government agencies		51,767		(197	)		51,570
State and political subdivisions		534		(3	)		531
U.S. government sponsored agency mortgage-backed securities		61,264		(378	)		60,886
Other debt securities		48,943		(208	)		48,735
Total temporarily impaired AFS securities	$	162,508	$	(786	)	$	161,722

The analysis performed as of December 31, 2019 indicated that all impairment was considered temporary, market and interest rate driven, and not credit-related.  The following tables provide the amortized cost, gross unrealized losses, and fair market value, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position as of December 31, 2019 that are not deemed to be other-than-temporarily impaired.  There were no held-to-maturity securities that were deemed to be impaired as of December 31, 2019.

Available-for-Sale

(in thousands)	Amortized Cost		Gross Unrealized Losses			Fair Value
Less Than 12 Months
U.S. Treasury and government agencies	$	25,955	$	(148	)	$	25,807
State and political subdivisions		8,356		(37	)		8,319
U.S. government sponsored agency mortgage-backed securities		19,317		(100	)		19,217
Other debt securities		31,418		(276	)		31,142
Total <12 months temporarily impaired AFS securities		85,046		(561	)		84,485
12 Months or More
U.S. Treasury and government agencies		82,339		(428	)		81,911
State and political subdivisions		0		0			0
U.S. government sponsored agency mortgage-backed securities		91,609		(972	)		90,637
Other debt securities		0		0			0
Total ≥12 months temporarily impaired AFS securities		173,948		(1,400	)		172,548
Total
U.S. Treasury and government agencies		108,294		(576	)		107,718
State and political subdivisions		8,356		(37	)		8,319
U.S. government sponsored agency mortgage-backed securities		110,926		(1,072	)		109,854
Other debt securities		31,418		(276	)		31,142
Total temporarily impaired AFS securities	$	258,994	$	(1,961	)	$	257,033