ACQUISITIONS (Details) $ in Thousands		3 Months Ended
	Jul. 17, 2019 USD ($) item shares	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Liabilities assumed:
Goodwill		$ 172,796	$ 171,758
HomeStar Bank
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Number of service banking centers acquired | item	5
Total consideration	$ 11,400
Shares issued | shares	404,968
Cash to pay outstanding trust preferred securities and subordinated debentures plus accrued interest	$ 1,000
Transaction and integration costs	$ 7,400
Goodwill increases		1,000
Net loans		211,070
Total deposits		321,740
Assets acquired:
Cash and cash equivalents		70,900
Investment securities available for sale		54,963
Equity securities		2,153
Loans		211,070
Loans held for sale		3,562
Premises and equipment		4,049
Operating lease right-of-use asset		5,177
Other real estate owned		1,092
Nonmarketable equity securities		454
Accrued interest receivable		1,185
Loan servicing rights		1,089
Mortgage servicing rights held for sale		1,701
Intangible assets		4,600
Deferred tax assets, net		2,732
Other assets		1,541
Total assets acquired		366,268
Liabilities assumed:
Deposits		321,740
FHLB advances and other borrowings		31,369
Accrued interest payable		115
Operating lease liabilities		6,232
Other liabilities		3,575
Total liabilities assumed		363,031
Net assets acquired		3,237
Goodwill		8,123
Total consideration paid		11,360
Intangible assets:
Total intangible assets		4,600
HomeStar Bank | Core deposits
Intangible assets:
Total intangible assets		$ 4,300
Estimated useful lives:
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		12 years
HomeStar Bank | Customer relationship
Intangible assets:
Total intangible assets		$ 300
Estimated useful lives:
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		6 years