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MARKETABLE SECURITIES - Schedule of Amortized Cost and Fair Value of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Available for sale:
Available-for-sale debt securities, amortized cost basis	$ 239,945	$ 235,849
Gross Unrealized Gain	127	69
Gross Unrealized Loss	7,097	3,546
Estimated Fair Value	232,975	232,372
Held to maturity:
Amortized Cost	163,164	174,684
Gross Unrealized Gains	1,258	2,554
Gross Unrealized Losses	1,622	448
Estimated Fair Value	162,800	176,790
Corporate bonds
Available for sale:
Available-for-sale debt securities, amortized cost basis	19,743	18,823
Gross Unrealized Gain	0	64
Gross Unrealized Loss	789	50
Estimated Fair Value	18,954	18,837
Municipal securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	15,778	7,746
Gross Unrealized Gain	75	0
Gross Unrealized Loss	260	200
Estimated Fair Value	15,593	7,546
Held to maturity:
Amortized Cost	141,942	146,496
Gross Unrealized Gains	1,156	2,244
Gross Unrealized Losses	1,094	218
Estimated Fair Value	142,004	148,522
Mortgage-backed securities
Available for sale:
Available-for-sale debt securities, amortized cost basis	93,083	92,471
Gross Unrealized Gain	52	0
Gross Unrealized Loss	3,676	1,793
Estimated Fair Value	89,459	90,678
Held to maturity:
Amortized Cost	17,163	22,026
Gross Unrealized Gains	54	199
Gross Unrealized Losses	500	230
Estimated Fair Value	16,717	21,995
Collateralized mortgage obligations
Available for sale:
Available-for-sale debt securities, amortized cost basis	111,341	116,809
Gross Unrealized Gain	0	5
Gross Unrealized Loss	2,372	1,503
Estimated Fair Value	108,969	115,311
Held to maturity:
Amortized Cost	4,059	6,162
Gross Unrealized Gains	48	111
Gross Unrealized Losses	28	0
Estimated Fair Value	$ 4,079	$ 6,273

X

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