INVESTMENTS SECURITIES AVAILABLE-FOR-SALE (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]    
Schedule of amortized cost of investment securities classified as available-for-sale and their approximate fair values
    Amortized     Gross     Gross        
    Cost     Unrealized     Unrealized     Fair  
(In thousands)   Basis     Gains     Losses     Value  
       
March 31, 2019                                
State and municipal securities   $ 11,453     $ 144     $ 62     $ 11,535  
Asset-backed securities     6,116       -       68       6,048  
Government mortgage-backed securities     32,353       95       369       32,079  
Total available-for-sale securities   $ 49,922     $ 239     $ 499     $ 49,662  
                                 
December 31, 2018                                
State and municipal securities   $ 20,118     $ 272     $ 135     $ 20,255  
Asset-backed securities     6,512       -       141       6,371  
Government mortgage-backed securities     25,135       138       496       24,777  
Total available-for-sale securities   $ 51,765     $ 410     $ 772     $ 51,403  
    Amortized     Gross     Gross        
    Cost     Unrealized     Unrealized     Fair  
(In thousands)   Basis     Gains     Losses     Value  
       
December 31, 2018                                
State and municipal   $ 20,118     $ 272     $ 135     $ 20,255  
Asset-backed securities     6,512       -       141       6,371  
Government mortgage-backed securities     25,135       138       496       24,777  
Total available-for-sale securities   $ 51,765     $ 410     $ 772     $ 51,403  
                                 
December 31, 2017                                
State and municipal   $ 20,726     $ 745     $ 17     $ 21,454  
Asset-backed securities     7,524       30       37       7,517  
Government mortgage-backed securities     32,421       317       280       32,458  
Total available-for-sale securities   $ 60,671     $ 1,092     $ 334     $ 61,429  
Schedule of maturities of debt securities
    Available-for-Sale  
    Amortized     Fair  
(In thousands)   Cost     Value  
             
Due within one year   $ 95     $ 95  
Due after one year through five years     604       606  
Due after five years through ten years     2,028       2,067  
Due after ten years     8,726       8,767  
Government mortgage-backed securities     32,353       32,079  
Asset-backed securities     6,116       6,048  
    $ 49,922     $ 49,662  
    Available-for-Sale  
    Amortized     Fair  
(In thousands)   Cost     Value  
             
Due within one year   $ 95     $ 95  
Due after one year through five years     604       608  
Due after five years through ten years     2,120       2,169  
Due after ten years     17,299       17,383  
Government mortgage-backed securities     25,135       24,777  
Asset-backed securities     6,512       6,371  
    $ 51,765     $ 51,403  
Schedule of aggregate fair value and unrealized losses of securities that have been in a continuous unrealized-loss position
    Less than 12 Months     12 Months or Longer     Total  
    Fair     Unrealized     Fair     Unrealized     Fair     Unrealized  
(In thousands)   Value     Losses     Value     Losses     Value     Losses  
                                     
March 31, 2019                                                
Temporarily impaired securities:                                                
State and municipal   $ 373     $ 5     $ 3,681     $ 57     $ 4,054     $ 62  
Asset-backed securities     -       -       6,048       68       6,048       68  
Government mortgage-backed securities     4,860       81       12,285       288       17,145       369  
Total temporarily impaired securities   $ 5,233     $ 86     $ 22,014     $ 413     $ 27,247     $ 499  
                                                 
December 31, 2018                                                
Temporarily impaired securities:                                                
State and municipal   $ 6,137     $ 115     $ 597     $ 20     $ 6,734     $ 135  
Asset-backed securities     3,833       98       2,538       43       6,371       141  
Government mortgage-backed securities     2,864       32       14,152       464       17,016       496  
Total temporarily impaired securities   $ 12,834     $ 245     $ 17,287     $ 527     $ 30,121     $ 772  
    Less than 12 Months     12 Months or Longer     Total  
    Fair     Unrealized     Fair     Unrealized     Fair     Unrealized  
(In thousands)   Value     Losses     Value     Losses     Value     Losses  
                                     
December 31, 2018                                                
Temporarily impaired securities:                                                
State and municipal   $ 6,137     $ 115     $ 597     $ 20     $ 6,734     $ 135  
Asset-backed securities     3,833       98       2,538       43       6,371       141  
Government mortgage-backed securities     2,864       32       14,152       464       17,016       496  
Total temporarily impaired securities   $ 12,834     $ 245     $ 17,287     $ 527     $ 30,121     $ 772  
                                                 
December 31, 2017                                                
Temporarily impaired securities:                                                
State and municipal   $ -     $ -     $ 611     $ 17     $ 611     $ 17  
Asset-backed securities     1,745       13       1,335       24       3,080       37  
Government mortgage-backed securities     5,231       20       13,584       260       18,815       280  
Total temporarily impaired securities   $ 6,976     $ 33     $ 15,530     $ 301     $ 22,506     $ 334