NOTE 3 - INVESTMENT SECURITIES - Amortized Cost and Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Securities held to maturity:
Securities held to maturity, at amortized cost	$ 343,477	$ 401,913
Securities held to maturity, gross unrealized gains	20,122	5,661
Securities held to maturity, gross unrealized (losses)	(125)	(6,804)
Securities held to maturity, fair value	363,474	400,770
Securities available for sale:
Debt Securities, Available-for-sale, Amortized Cost	206,949	266,671
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	5,257	501
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	274	6,116
Securities available for sale, at fair value	211,932	261,056
Debt Securities, Available-for-sale	211,932	261,056
US States and Political Subdivisions Debt Securities
Securities held to maturity:
Securities held to maturity, at amortized cost	342,427	400,863
Securities held to maturity, gross unrealized gains	20,122	5,661
Securities held to maturity, gross unrealized (losses)	(119)	(6,803)
Securities held to maturity, fair value	362,430	399,721
Securities available for sale:
Debt Securities, Available-for-sale, Amortized Cost	47,259	59,069
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,653	180
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	10	703
Securities available for sale, at fair value	48,902	58,546
Debt Securities, Available-for-sale	48,902	58,546
US Government Agencies Debt Securities
Securities available for sale:
Debt Securities, Available-for-sale, Amortized Cost	20,861	37,150
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	470	39
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	63	778
Securities available for sale, at fair value	21,268	36,411
Debt Securities, Available-for-sale	21,268	36,411
Residential Mortgage Backed Securities
Securities available for sale:
Debt Securities, Available-for-sale, Amortized Cost	121,118	163,698
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2,962	182
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	200	4,631
Securities available for sale, at fair value	123,880	159,249
Debt Securities, Available-for-sale	123,880	159,249
Other Securities
Securities held to maturity:
Securities held to maturity, at amortized cost	1,050	1,050
Securities held to maturity, gross unrealized (losses)	(6)	(1)
Securities held to maturity, fair value	1,044	1,049
Securities available for sale:
Debt Securities, Available-for-sale, Amortized Cost	17,711	6,754
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	172	100
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	1	4
Securities available for sale, at fair value	17,882	6,850
Debt Securities, Available-for-sale	$ 17,882	$ 6,850

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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