Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Goodwill and Acquired Intangible Assets (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Goodwill and Acquired Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Goodwill and Acquired Intangible Assets [Abstract]    
Goodwill $ 0 $ 0
Intangible Assets [Abstract]    
Acquired intangible $ 0 $ 0
Core Deposits [Member] | Minimum [Member]    
Intangible Assets [Abstract]    
Estimated useful life of intangible assets 10 years  
Core Deposits [Member] | Maximum [Member]    
Intangible Assets [Abstract]    
Estimated useful life of intangible assets 16 years  
Customer Relationships [Member] | Minimum [Member]    
Intangible Assets [Abstract]    
Estimated useful life of intangible assets 10 years  
Customer Relationships [Member] | Maximum [Member]    
Intangible Assets [Abstract]    
Estimated useful life of intangible assets 16 years