AFS Securities (Tables)

6 Months Ended

Jun. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Amortized cost and fair value of available-for-sale securities

The amortized cost and fair value of AFS securities, with gross unrealized gains and losses, are as follows at:



	June 30, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
States and political subdivisions	$	141,246	$	5,539	$	—	$	146,785
Auction rate money market preferred	3,200		—		221		2,979
Mortgage-backed securities	115,224		3,805		—		119,029
Collateralized mortgage obligations	106,586		5,035		—		111,621
Total	$	366,256	$	14,379	$	221	$	380,414



	December 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
States and political subdivisions	$	165,005	$	4,747	$	—	$	169,752
Auction rate money market preferred	3,200		—		81		3,119
Mortgage-backed securities	139,831		933		560		140,204
Collateralized mortgage obligations	115,944		1,007		187		116,764
Total	$	423,980	$	6,687	$	828	$	429,839

Amortized cost and fair value of available-for-sale securities by contractual maturity

The amortized cost and fair value of AFS securities by contractual maturity at June 30, 2020 are as follows:



	Maturing								Securities with Variable Monthly Payments or Noncontractual Maturities
	Due in One Year or Less		After One Year But Within Five Years		After Five Years But Within Ten Years		After Ten Years				Total
States and political subdivisions	$	19,603	$	65,321	$	30,558	$	25,764	$	—	$	141,246
Auction rate money market preferred	—		—		—		—		3,200		3,200
Mortgage-backed securities	—		—		—		—		115,224		115,224
Collateralized mortgage obligations	—		—		—		—		106,586		106,586
Total amortized cost	$	19,603	$	65,321	$	30,558	$	25,764	$	225,010	$	366,256
Fair value	$	19,738	$	67,281	$	32,133	$	27,633	$	233,629	$	380,414

Schedule of Realized Gain (Loss) [Table Text Block]

A summary of the sales activity of AFS securities was as follows for the:



	Three Months Ended June 30				Six Months Ended June 30
	2020		2019		2020		2019
Proceeds from sales of AFS securities	$	—	$	—	$	26,855	$	—
Realized gains (losses)	$	—	$	—	$	71	$	—
Applicable income tax expense (benefit)	$	—	$	—	$	15	$	—

Available-for-sale securities with gross unrealized losses

The following information pertains to AFS securities with gross unrealized losses at June 30, 2020 and December 31, 2019, aggregated by investment category and length of time that individual securities have been in a continuous loss position.



	June 30, 2020
	Less Than Twelve Months				Twelve Months or More
	Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Total Unrealized Losses
Auction rate money market preferred	$	—	$	—	$	221	$	2,979	221
Number of securities in an unrealized loss position:			—				2		2



	December 31, 2019
	Less Than Twelve Months				Twelve Months or More
	Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Total Unrealized Losses
Auction rate money market preferred	$	—	$	—	$	81	$	3,119	$	81
Mortgage-backed securities	3		3,974		557		49,701		560
Collateralized mortgage obligations	43		20,262		144		13,309		187
Total	$	46	$	24,236	$	782	$	66,129	$	828
Number of securities in an unrealized loss position:			9				19		28