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GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 37,144	$ 37,144	$ 37,144	$ 39,244
Impairment on intangible assets	0	0	336
Aggregate amortization expense	$ 2,195	$ 3,007	3,928
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	4 years 8 months 12 days
Customer relationship intangible
Finite-Lived Intangible Assets [Line Items]
Impairment on intangible assets			246
Trade name intangibles
Finite-Lived Intangible Assets [Line Items]
Impairment on intangible assets			90
Minimum | Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Amortization period of other intangible assets	4 years
Maximum | Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Amortization period of other intangible assets	10 years
Mortgage Banking
Finite-Lived Intangible Assets [Line Items]
Goodwill, impairment loss			$ 2,100

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