MARKETABLE SECURITIES (Tables)

3 Months Ended

Mar. 31, 2020

Investments Debt And Equity Securities [Abstract]

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

The following tables summarize the amortized cost and fair value of securities available for sale as of March 31, 2020, and the amortized cost and fair value of securities held to maturity and available for sale, respectively, as of December 31, 2019 and the corresponding amounts of gross unrealized gains and losses:

March 31, 2020	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for sale:
Corporate bonds	$	19,648	$	144	$	103	$	19,689
Municipal securities		170,561		3,276		288		173,549
Mortgage-backed securities		93,979		2,508		67		96,420
Collateralized mortgage obligations		87,001		487		84		87,404
Total available for sale	$	371,189	$	6,415	$	542	$	377,062

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

Schedule of Securities with Gross Unrealized Losses

Information pertaining to securities with gross unrealized losses as of March 31, 2020, for which no allowance for credit losses has been recorded, and December 31, 2019, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position is detailed in the following tables:

	Less Than 12 Months					12 Months or Longer					Total
March 31, 2020	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Available for sale:
Corporate bonds	$	(103	)	$	11,430	$	—		$	—	$	(103	)	$	11,430
Municipal securities		(288	)		28,772		—			—		(288	)		28,772
Mortgage-backed securities		(13	)		4,233		(54	)		5,840		(67	)		10,073
Collateralized mortgage obligations		(66	)		26,914		(18	)		2,261		(84	)		29,175
Total available for sale	$	(470	)	$	71,349	$	(72	)	$	8,101	$	(542	)	$	79,450

	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

Investments Classified by Contractual Maturity Date

The contractual maturities at March 31, 2020 of available for sale 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
March 31, 2020	Amortized Cost		Estimated Fair Value
Due within one year	$	5,095	$	5,115
Due after one year through five years		51,142		51,724
Due after five years through ten years		51,401		52,805
Due after ten years		82,571		83,594
Mortgage-backed securities		93,979		96,420
Collateralized mortgage obligations		87,001		87,404
Total securities	$	371,189	$	377,062