SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
 12 Months Ended
Jun. 06, 2016
USD ($)
shares
Jun. 06, 2016
USD ($)
shares
May 24, 2016
USD ($)
shares
Dec. 31, 2016
USD ($)
shares
Oct. 03, 2016
USD ($)
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2014
shares
Initial Public Offering              
Proceeds from Issuance Initial Public Offering $ 71,500,000            
Common stock, shares issued | shares       15,483,499   11,797,404 138,239
Indemnification Asset Due from FDIC              
Early termination, consideration paid         $ 565,000    
Reversal of accrued loss share liabilities         214,000    
Reversal of accrued loss share liabilities, after tax         $ 225,000    
Liabilities for unfunded commitments       $ 302,000   $ 220,000  
Minimum              
Lease Financing              
Percentage of residual value       3      
Goodwill and Intangible Assets              
Other intangible assets amortized over a period       1 year      
Maximum              
Lease Financing              
Percentage of residual value       15      
Goodwill and Intangible Assets              
Other intangible assets amortized over a period       20 years      
Premises | Minimum              
Premises and Equipment              
Estimated useful lives       10 years      
Premises | Maximum              
Premises and Equipment              
Estimated useful lives       40 years      
Equipment | Minimum              
Premises and Equipment              
Estimated useful lives       3 years      
Equipment | Maximum              
Premises and Equipment              
Estimated useful lives       10 years      
IPO              
Initial Public Offering              
Proceeds from Issuance Initial Public Offering     $ 67,000,000        
Common stock, shares issued | shares     3,044,252        
Over-Allotment Option [Member]              
Initial Public Offering              
Proceeds from Issuance Initial Public Offering   $ 12,000,000          
Common stock, shares issued | shares 545,813 545,813