NOTE 2 - INVESTMENT SECURITIES (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($) item state	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) item state	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) item state
Number of securities \| item	609		609
Available-for-sale, unrealized loss positions, qualitative disclosure, number of positions \| item	54		54
Aggregate losses of securities (as a percent)	0.40%		0.40%
Available-for-sale, unrealized loss positions, qualitative disclosure, number of positions, greater than or equal to one year \| item	0		0
Other than temporary impairment losses, investments	$ 0	$ 0	$ 0	$ 0
Sale of securities			6,327	$ 4,661
Gain on sale			$ 134
Number Of Charters Owning Municipal Securities \| item			4
Municipal securities \| General Obligation Bonds
Number of issuers \| item	97		97		93
Other investments	$ 83,300		$ 83,300		$ 77,200
Number of states holding investments \| state	23		23		22
Municipal securities \| General Obligation Bonds \| Minimum
Other investments	$ 5,000		$ 5,000		$ 5,000
Municipal securities \| General Obligation Bonds \| Aggregate Fair Value Exceeding 5 Million [Member]
Number of states holding investments \| state	7		7		6
Municipal securities \| Revenue Bonds
Number of issuers \| item	170		170		154
Other investments	$ 462,000		$ 462,000		$ 396,600
Number of states holding investments	22		22		17
Municipal securities \| Revenue Bonds \| Minimum
Other investments	$ 5,000		$ 5,000		$ 5,000
Municipal securities \| Revenue Bonds \| Aggregate Fair Value Exceeding 5 Million [Member]
Number of states holding investments	12		12		9

The aggregate depreciation from amortized cost basis as a percent.

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- Definition

The number of the company's that own the company's municipal securities.

+ References

No definition available.

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- Definition

Number of issuers of debt securities.

+ References

No definition available.

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Number of securities.

+ References

No definition available.

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- Definition

Represents the number of states investments are held in.

+ References

No definition available.

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- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922888-210455

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- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)(3)
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-Section 50
-Paragraph 4
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- Definition

The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(3)(a))
-URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
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-Subparagraph (SX 210.5-03(b)(7)(c))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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- Definition

The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 8A
-URI http://asc.fasb.org/extlink&oid=118954083&loc=SL6284422-111562

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.

+ References

No definition available.

+ Details

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