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ACQUISITIONS - Acquisition Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs, Professional Fees	$ 369	$ 938	$ 130
Business Combination, Acquisition Related Costs, Data Processing	2,000	4,366	1,290
Business Combination, Acquisition Related Costs, Severance Expense	266	835	536
Business Combination, Acquisition Related Costs, Other Expense	383	480	369
Total	$ 3,018	6,619	$ 2,325
TIG Bancorp
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs, Professional Fees		403
Business Combination, Acquisition Related Costs, Data Processing		1,709
Business Combination, Acquisition Related Costs, Severance Expense		257
Business Combination, Acquisition Related Costs, Other Expense		115
Total		2,484
Uniti Financial Corporation
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs, Professional Fees		535
Business Combination, Acquisition Related Costs, Data Processing		2,657
Business Combination, Acquisition Related Costs, Severance Expense		578
Business Combination, Acquisition Related Costs, Other Expense		365
Total		$ 4,135

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

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