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INVESTMENTS AND FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
INVESTMENTS AND FAIR VALUE MEASUREMENTS (Details) [Line Items]
Long-term Debt, Gross	$ 38,321		$ 24,913
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(191)	$ 0
Payment for Contingent Consideration Liability, Financing Activities	1,784	$ 0
Pinnacle Bank [Member]
INVESTMENTS AND FAIR VALUE MEASUREMENTS (Details) [Line Items]
Long-term Debt, Gross	$ 0		$ 8,856

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Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-Subparagraph (b)(1)
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-Topic 210
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Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date.

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