EARNINGS PER SHARE (Tables)
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Earnings Per Share [Abstract]    
Schedule of earning per share
    Three months ended  
    March 31,  
(Dollars in thousands)   2019     2018  
Net income attributable to common shareholders   $ 2,218     $ 2,022  
                 
Average number of common shares outstanding     9,662,181       9,657,319  
Less:                
average unallocated ESOP shares     (271,525 )     (286,226 )
average unvested restricted stock     (87,268 )     (122,405 )
average treasury stock acquired     (36,282 )     (28,823 )
Average number of common shares outstanding to calculate basic earnings per common share     9,267,106       9,219,865  
                 
Effect of dilutive unvested restricted stock and stock option awards     38,178       75,138  
Average number of common shares outstanding to calculate diluted earnings per common share     9,305,284       9,295,003  
                 
Earnings per common share:                
Basic   $ 0.24     $ 0.22  
Diluted   $ 0.24     $ 0.22  
(Dollars in thousands)   2018     2017  
Net income attributable to common shareholders   $ 9,325     $ 7,915  
                 
Average number of common shares outstanding     9,659,357       9,652,448  
Less:                
average unallocated ESOP shares     (283,337 )     (298,680 )
average unvested restricted stock     (106,033 )     (136,986 )
average treasury stock acquired     (29,901 )     (17,508 )
Average number of common shares outstanding
to calculate basic earnings per common share
    9,240,086       9,199,274  
                 
Effect of dilutive unvested restricted stock and stock option awards     66,230       613  
Average number of common shares outstanding
to calculate diluted earnings per common share
    9,306,316       9,199,887  
                 
Earnings per common share:                
Basic   $ 1.01     $ 0.86  
Diluted   $ 1.00     $ 0.86