MARKETABLE SECURITIES (Tables)

9 Months Ended

Sep. 30, 2018

Investments, Debt and Equity Securities [Abstract]

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

The following tables summarize the amortized cost and fair value of securities available for sale and securities held to maturity as of September 30, 2018 and December 31, 2017 and the corresponding amounts of gross unrealized gains and losses:



September 30, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for sale:
Corporate bonds	$	19,762	$	—	$	648	$	19,114
Municipal securities	15,814		—		451		15,363
Mortgage-backed securities	91,208		—		4,447		86,761
Collateralized mortgage obligations	115,125		—		3,985		111,140
Total available for sale	$	241,909	$	—	$	9,531	$	232,378

Held to maturity:
Municipal securities	$	142,419	$	710	$	2,420	$	140,709
Mortgage-backed securities	17,871		77		611		17,337
Collateralized mortgage obligations	4,549		46		45		4,550
Total held to maturity	$	164,839	$	833	$	3,076	$	162,596



December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for sale:
Corporate bonds	$	18,823	$	64	$	50	$	18,837
Municipal securities	7,746		—		200		7,546
Mortgage-backed securities	92,471		—		1,793		90,678
Collateralized mortgage obligations	116,809		5		1,503		115,311
Total available for sale	$	235,849	$	69	$	3,546	$	232,372

Held to maturity:
Municipal securities	$	146,496	$	2,244	$	218	$	148,522
Mortgage-backed securities	22,026		199		230		21,995
Collateralized mortgage obligations	6,162		111		—		6,273
Total held to maturity	$	174,684	$	2,554	$	448	$	176,790

Schedule of Securities with Gross Unrealized Losses

Information pertaining to securities with gross unrealized losses as of September 30, 2018 and December 31, 2017 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
September 30, 2018	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Available for sale:
Corporate bonds	$	(648	)	$	19,114	$	—		$	—	$	(648	)	$	19,114
Municipal securities	(65		)	7,557		(386		)	7,289		(451		)	14,846
Mortgage-backed securities	(469		)	15,439		(3,978		)	71,322		(4,447		)	86,761
Collateralized mortgage obligations	(2,126		)	68,879		(1,859		)	42,261		(3,985		)	111,140
Total available for sale	$	(3,308	)	$	110,989	$	(6,223	)	$	120,872	$	(9,531	)	$	231,861

Held to maturity:
Municipal securities	$	(1,633	)	$	75,935	$	(787	)	$	20,088	$	(2,420	)	$	96,023
Mortgage-backed securities	(232		)	6,236		(379		)	8,004		(611		)	14,240
Collateralized mortgage obligations	(45		)	2,363		—			—		(45		)	2,363
Total held to maturity	$	(1,910	)	$	84,534	$	(1,166	)	$	28,092	$	(3,076	)	$	112,626



	Less Than 12 Months					12 Months or Longer					Total
December 31, 2017	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Available for sale:
Corporate bonds	$	(50	)	$	8,019	$	—		$	—	$	(50	)	$	8,019
Municipal securities	—			—		(200		)	7,546		(200		)	7,546
Mortgage-backed securities	(658		)	42,881		(1,135		)	47,797		(1,793		)	90,678
Collateralized mortgage obligations	(1,091		)	93,584		(412		)	21,258		(1,503		)	114,842
Total available for sale	$	(1,799	)	$	144,484	$	(1,747	)	$	76,601	$	(3,546	)	$	221,085

Held to maturity:
Municipal securities	$	(37	)	$	9,230	$	(181	)	$	19,961	$	(218	)	$	29,191
Mortgage-backed securities	(57		)	6,499		(173		)	9,747		(230		)	16,246
Collateralized mortgage obligations	—			—		—			—		—			—
Total held to maturity	$	(94	)	$	15,729	$	(354	)	$	29,708	$	(448	)	$	45,437

Schedule of Proceeds from Sales of Securities

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



	Three Months Ended September 30,					Nine Months Ended September 30,
	2018			2017		2018			2017
Proceeds from sales	$	102,356		$	199,974	$	111,813		$	214,736
Gross gains	4			—		4			38
Gross losses	(3		)	—		(54		)	(13		)

Schedule of Sale of Held To Maturity Securities

Sale of securities held to maturity were as follows for:



	Three Months Ended September 30,		Nine Months Ended September 30,
	2017		2017
Proceeds from sales	$	—	$	923
Amortized cost	—		907
Gross realized gains	—		16
Tax expense related to securities gains/losses	—		(4		)

Investments Classified by Contractual Maturity Date

The contractual maturities at September 30, 2018 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
September 30, 2018	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due within one year	$	—	$	—	$	769	$	768
Due after one year through five years	11,234		10,926		19,153		19,244
Due after five years through ten years	16,668		16,262		42,448		42,774
Due after ten years	7,674		7,289		80,049		77,923
Mortgage-backed securities	91,208		86,761		17,871		17,337
Collateralized mortgage obligations	115,125		111,140		4,549		4,550
Total Securities	$	241,909	$	232,378	$	164,839	$	162,596