MARKETABLE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2019

Investments Debt And Equity Securities [Abstract]

Schedule of Amortized Cost and Fair Value of Available for Sale and Held to Maturity Securities

The following table summarizes the amortized cost and fair value of securities available for sale and securities held to maturity at December 31, 2019 and 2018 and the corresponding amounts of gross unrealized gains and losses:

December 31, 2019	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for sale:
Corporate bonds	$	19,667	$	592	$	—	$	20,259
Municipal securities		16,780		576		8		17,348
Mortgage-backed securities		83,967		550		335		84,182
Collateralized mortgage obligations		89,798		1,146		17		90,927
Total available for sale	$	210,212	$	2,864	$	360	$	212,716
Held to maturity:
Municipal securities	$	138,416	$	4,710	$	3	$	143,123
Mortgage-backed securities		14,365		198		13		14,550
Collateralized mortgage obligations		2,677		110		—		2,787
Total held to maturity	$	155,458	$	5,018	$	16	$	160,460

December 31, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for sale:
Corporate bonds	$	19,743	$	—	$	789	$	18,954
Municipal securities		15,778		75		260		15,593
Mortgage-backed securities		93,083		52		3,676		89,459
Collateralized mortgage obligations		111,341		—		2,372		108,969
Total available for sale	$	239,945	$	127	$	7,097	$	232,975
Held to maturity:
Municipal securities	$	141,942	$	1,156	$	1,094	$	142,004
Mortgage-backed securities		17,163		54		500		16,717
Collateralized mortgage obligations		4,059		48		28		4,079
Total held to maturity	$	163,164	$	1,258	$	1,622	$	162,800

Schedule of Securities with Gross Unrealized Losses

The following table summarizes securities with unrealized losses at December 31, 2019 and 2018, aggregated by major security type and length of time in a continuous unrealized loss position:

	Less Than 12 Months					12 Months or Longer					Total
December 31, 2019	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Available for sale:
Corporate bonds	$	—		$	—	$	—		$	—	$	—		$	—
Municipal securities		(8	)		1,138		—			—		(8	)		1,138
Mortgage-backed securities		(25	)		19,421		(310	)		42,116		(335	)		61,537
Collateralized mortgage obligations		—			—		(17	)		2,594		(17	)		2,594
Total available for sale	$	(33	)	$	20,559	$	(327	)	$	44,710	$	(360	)	$	65,269
Held to maturity:
Municipal securities	$	(1	)	$	1,313	$	(2	)	$	759	$	(3	)	$	2,072
Mortgage-backed securities		—			—		(13	)		7,032		(13	)		7,032
Collateralized mortgage obligations		—			—		—			—		—			—
Total held to maturity	$	(1	)	$	1,313	$	(15	)	$	7,791	$	(16	)	$	9,104

	Less Than 12 Months					12 Months or Longer					Total
December 31, 2018	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Available for sale:
Corporate bonds	$	(453	)	$	11,236	$	(336	)	$	7,718	$	(789	)	$	18,954
Municipal securities		(17	)		2,219		(243	)		7,407		(260	)		9,626
Mortgage-backed securities		(89	)		7,173		(3,587	)		76,717		(3,676	)		83,890
Collateralized mortgage obligations		(79	)		9,232		(2,293	)		99,390		(2,372	)		108,622
Total available for sale	$	(638	)	$	29,860	$	(6,459	)	$	191,232	$	(7,097	)	$	221,092
Held to maturity:
Municipal securities	$	(512	)	$	55,793	$	(582	)	$	26,511	$	(1,094	)	$	82,304
Mortgage-backed securities		(21	)		1,478		(479	)		12,317		(500	)		13,795
Collateralized mortgage obligations		(28	)		2,171		—			—		(28	)		2,171
Total held to maturity	$	(561	)	$	59,442	$	(1,061	)	$	38,828	$	(1,622	)	$	98,270

Schedule of Proceeds from Sales of Securities

The proceeds from sales of securities and the associated gains and losses are listed below:

	2019			2018			2017
Proceeds from sales	$	3,957		$	411,796		$	217,111
Gross gains		—			4			180
Gross losses		(22	)		(54	)		(13	)

Schedule of Sale of Held To Maturity Securities

Sales of securities held to maturity were as follows for the years ended December 31:

	2019		2018		2017
Proceeds from sales	$	—	$	—	$	3,298
Amortized cost		—		—		3,140
Gross realized gains		—		—		158
Tax expense related to securities gains/losses		—		—		(44	)

Investments Classified by Contractual Maturity Date

The contractual maturities at December 31, 2019 of available for sale and held to maturity securities at carrying value and estimated fair value are shown below. The Company invests in mortgage-backed securities and collateralized mortgage obligations that have expected maturities that differ from their contractual maturities. These differences arise because borrowers and/or issuers may have the right to call or prepay their obligation with or without call or prepayment penalties.

	Available for Sale				Held to Maturity
December 31, 2019	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due within one year	$	1,015	$	1,019	$	2,189	$	2,200
Due after one year through five years		13,407		13,772		30,221		31,179
Due after five years through ten years		13,324		13,924		32,771		34,078
Due after ten years		8,701		8,892		73,235		75,666
Mortgage-backed securities		83,967		84,182		14,365		14,550
Collateralized mortgage obligations		89,798		90,927		2,677		2,787
Total Securities	$	210,212	$	212,716	$	155,458	$	160,460