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GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 37,144	$ 37,144
Goodwill (including portion attributable to discontinued operations)		37,144	$ 39,244	$ 39,244
Impairment on intangible assets	0	336	690
Aggregate amortization expense	$ 3,007	3,928	$ 4,851
Banking
Finite-Lived Intangible Assets [Line Items]
Goodwill		37,100
Mortgage Banking
Finite-Lived Intangible Assets [Line Items]
Goodwill		2,100
Goodwill, impairment loss		2,100
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	5 years 4 months 6 days
Core deposit intangibles | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization period of other intangible assets	4 years
Core deposit intangibles | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization period of other intangible assets	10 years
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
Trade name intangibles | Mortgage Banking
Finite-Lived Intangible Assets [Line Items]
Impairment on intangible assets		$ 690

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