FAIR VALUE MEASUREMENTS AFS (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Available for Sale:
Amortized Cost	$ 172,991	$ 165,278
Fair Value	171,596	164,183
Unrealized Gains	16	15
Unrealized Losses	(1,411)	(1,110)
Municipal bonds
Available for Sale:
Amortized Cost	32,411	16,046
Fair Value	31,484	15,206
Unrealized Losses	(927)	(840)
Variable rate demand notes
Available for Sale:
Amortized Cost		19,700
Fair Value		19,700
Corporate bonds
Available for Sale:
Amortized Cost	134,143	122,568
Fair Value	133,684	122,298
Unrealized Losses	(459)	(270)
Government securities
Available for Sale:
Amortized Cost	1,192	2,411
Fair Value	1,208	2,426
Unrealized Gains	16	15
Certificates of deposit
Available for Sale:
Amortized Cost	5,245	4,553
Fair Value	5,220	$ 4,553
Unrealized Losses	$ (25)

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 50
-Paragraph 2
-Subparagraph (c)
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
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