MARKETABLE SECURITIES (Tables)

3 Months Ended

Mar. 31, 2021

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, 2021 and as of December 31, 2020 and the corresponding amounts of gross unrealized gains and losses:

March 31, 2021	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for sale:
Corporate bonds	$	33,096	$	1,181	$	77	$	34,200
Municipal securities		162,906		9,476		116		172,266
Mortgage-backed securities		139,186		2,891		609		141,468
Collateralized mortgage obligations		57,681		2,140		19		59,802
Total available for sale	$	392,869	$	15,688	$	821	$	407,736

December 31, 2020	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for sale:
Corporate bonds	$	29,608	$	1,382	$	8	$	30,982
Municipal securities		164,668		11,036		—		175,704
Mortgage-backed securities		104,210		3,041		87		107,164
Collateralized mortgage obligations		64,611		2,335		1		66,945
Total available for sale	$	363,097	$	17,794	$	96	$	380,795

Schedule of Securities with Gross Unrealized Losses

Information pertaining to securities with gross unrealized losses as of March 31, 2021 and December 31, 2020, for which no allowance for credit losses has been recorded, 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, 2021	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Available for sale:
Corporate bonds	$	(77	)	$	6,423	$	—	$	—	$	(77	)	$	6,423
Municipal securities		(116	)		4,409		—		—		(116	)		4,409
Mortgage-backed securities		(609	)		50,451		—		—		(609	)		50,451
Collateralized mortgage obligations		(19	)		8,993		—		—		(19	)		8,993
Total available for sale	$	(821	)	$	70,276	$	—	$	—	$	(821	)	$	70,276

	Less Than 12 Months					12 Months or Longer					Total
December 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	$	(8	)	$	2,493	$	—		$	—	$	(8	)	$	2,493
Mortgage-backed securities		(87	)		25,775		—			—		(87	)		25,775
Collateralized mortgage obligations		—			—		(1	)		106		(1	)		106
Total available for sale	$	(95	)	$	28,268	$	(1	)	$	106	$	(96	)	$	28,374

Investments Classified by Contractual Maturity Date

The contractual maturities at March 31, 2021 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, 2021	Amortized Cost		Estimated Fair Value
Due within one year	$	2,611	$	2,657
Due after one year through five years		54,004		56,579
Due after five years through ten years		63,588		66,693
Due after ten years		75,799		80,537
Mortgage-backed securities		139,186		141,468
Collateralized mortgage obligations		57,681		59,802
Total Securities	$	392,869	$	407,736