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INVESTMENT SECURITIES (Tables)
 9 Months Ended
Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]  
Schedule of amortized cost and approximate fair value of investment securities
   
Amortized
Cost
    
Gross
Unrealized
Gains
    
Gross
Unrealized
Losses
    
Estimated
Fair Value
  
December 31, 2017
                        
Available for sale:
                        
Municipal securities
  
$
10,038
    
$
10
    
$
(68
)
  
$
9,980
  
Agency securities
    
22,408
      
11
      
(202
)
    
22,217
  
Real estate mortgage investment conduits (1)
    
50,145
      
4
      
(754
)
    
49,395
  
Residential mortgage-backed securities (1)
    
95,795
      
22
      
(1,184
)
    
94,633
  
Other mortgage-backed securities (2)
    
49,651
      
16
      
(961
)
    
48,706
  
Total available for sale
  
$
228,037
    
$
63
    
$
(3,169
)
  
$
224,931
  
                                 
Held to maturity:
                                
Residential mortgage-backed securities (3)
  
$
44
    
$
1
    
$
-
    
$
45
  
 
   
Amortized
Cost
    
Gross
Unrealized
Gains
    
Gross
Unrealized
Losses
    
Estimated
Fair Value
  
March 31, 2017
                        
Available for sale:
                        
Municipal securities
  
$
2,936
    
$
-
    
$
(117
)
  
$
2,819
  
Agency securities
    
16,993
      
18
      
(203
)
    
16,808
  
Real estate mortgage investment conduits (1)
    
43,510
      
49
      
(399
)
    
43,160
  
Residential mortgage-backed securities (1)
    
97,742
      
111
      
(1,242
)
    
96,611
  
Other mortgage-backed securities (2)
    
41,649
      
15
      
(848
)
    
40,816
  
Total available for sale
  
$
202,830
    
$
193
    
$
(2,809
)
  
$
200,214
  
                                 
Held to maturity:
                                
Residential mortgage-backed securities (3)
  
$
64
    
$
2
    
$
-
    
$
66
  
   
(1) Comprised of Federal Home Loan Mortgage Corporation ("FHLMC"), Federal National Mortgage Association ("FNMA") and Ginnie Mae ("GNMA") issued securities.
  
(2) Comprised of U.S. Small Business Administration ("SBA") issued securities and commercial real estate ("CRE") secured securities issued by FNMA.
  
(3) Comprised of FHLMC and FNMA issued securities.
Schedule of contractual maturities of investment securities
   
Available for Sale
    
Held to Maturity
  
   
Amortized
Cost
    
Estimated
Fair Value
    
Amortized
Cost
    
Estimated
Fair Value
  
Due in one year or less
  
$
10,000
    
$
9,953
    
$
-
    
$
-
  
Due after one year through five years
    
6,447
      
6,432
      
6
      
6
  
Due after five years through ten years
    
47,547
      
46,865
      
33
      
34
  
Due after ten years
    
164,043
      
161,681
      
5
      
5
  
Total
  
$
228,037
    
$
224,931
    
$
44
    
$
45
  
Schedule of temporarily impaired securities, fair value and unrealized losses
   
Less than 12 months
    
12 months or longer
    
Total
  
   
Estimated
Fair Value
    
Unrealized
Losses
    
Estimated
Fair Value
    
Unrealized
Losses
    
Estimated
Fair Value
    
Unrealized
Losses
  
December 31, 2017
                                    
                                     
Available for sale:
                                    
Municipal securities
  
$
5,471
    
$
(52
)
  
$
2,176
    
$
(16
)
  
$
7,647
    
$
(68
)
Agency securities
    
5,369
      
(41
)
    
15,832
      
(161
)
    
21,201
      
(202
)
Real estate mortgage investment conduits (1)
    
31,252
      
(358
)
    
15,643
      
(396
)
    
46,895
      
(754
)
Residential mortgage-backed securities (1)
    
48,645
      
(315
)
    
40,262
      
(869
)
    
88,907
      
(1,184
)
Other mortgage-backed securities (2)
    
16,331
      
(173
)
    
30,651
      
(788
)
    
46,982
      
(961
)
Total available for sale
  
$
107,068
    
$
(939
)
  
$
104,564
    
$
(2,230
)
  
$
211,632
    
$
(3,169
)
   
(1) Comprised of FHLMC, FNMA and GNMA issued securities.
  
(2) Comprised of SBA and CRE secured securities issued by FHLMC.
  
   
March 31, 2017
                                                
                                                 
Available for sale:
                                                
Municipal securities
  
$
2,819
    
$
(117
)
  
$
-
    
$
-
    
$
2,819
    
$
(117
)
Agency securities
    
15,785
      
(203
)
    
-
      
-
      
15,785
      
(203
)
Real estate mortgage investment conduits (1)
    
32,221
      
(399
)
    
-
      
-
      
32,221
      
(399
)
Residential mortgage-backed securities (2)
    
74,388
      
(1,232
)
    
602
      
(10
)
    
74,990
      
(1,242
)
Other mortgage-backed securities (3)
    
36,754
      
(803
)
    
2,840
      
(45
)
    
39,594
      
(848
)
Total available for sale
  
$
161,967
    
$
(2,754
)
  
$
3,442
    
$
(55
)
  
$
165,409
    
$
(2,809
)
                                                 
(1) Comprised of FHLMC and FNMA issued securities.
  
(2) Comprised of FHLMC, FNMA and GNMA issued securities.
  
(3) Comprised of SBA issued and CRE secured securities issued by FNMA.