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Investment Securities (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Mar. 31, 2016
USD ($)
Jun. 30, 2017
USD ($)
segment
security
Dec. 31, 2016
USD ($)
Comparison of amortized cost and fair value of securities available for sale [Abstract]        
Amortized Cost $ 53,474,000   $ 53,474,000 $ 57,859,000
Gross Unrealized Gains 402,000   402,000 387,000
Gross Unrealized Losses (415,000)   (415,000) (755,000)
Fair Value (Carrying Amount) 53,461,000   53,461,000 57,491,000
Amortized Cost [Abstract]        
Due in one year or less 4,000,000   4,000,000  
Due after one year through five years 0   0  
Due after five years through ten years 792,000   792,000  
Due after ten years 20,552,000   20,552,000  
Collateralized mortgage obligations 28,130,000   28,130,000  
Amortized Cost 53,474,000   53,474,000 57,859,000
Fair Value (Carrying Amount) [Abstract]        
Due in one year or less 3,780,000   3,780,000  
Due after one year through five years 0   0  
Due after five years through ten years 808,000   808,000  
Due after ten years 20,851,000   20,851,000  
Collateralized mortgage obligations 28,022,000   28,022,000  
Total AFS securities [1] 53,461,000   53,461,000 57,491,000
Available-for-sale securities, gross realized gains 0 $ 0    
Available-for-sale securities, gross realized losses 0 0    
OTTI losses, investments 0 $ 0    
Fair value of available-for-sale securities pledged as collateral for FHLB borrowings 18,196,687   18,196,687  
Held-to-maturity Securities 0   0 0
Trading Securities 0   0 0
Summarizes temporarily impaired investment securities [Abstract]        
Less than 12 Months, Fair Value (Carrying Amount) 21,049,000   21,049,000 38,185,000
Less than 12 Months, Unrealized Losses (115,000)   (115,000) (471,000)
12 Months or More, Fair Value (Carrying Amount) 14,648,000   14,648,000 3,716,000
12 months or More, Unrealized Losses (300,000)   (300,000) (284,000)
Total Fair Value (Carrying Amount) 35,697,000   35,697,000 41,901,000
Total Unrealized Losses (415,000)   $ (415,000) (755,000)
Number of general segments for the segregation of portfolio | segment     2  
Carrying Amount        
Fair Value (Carrying Amount) [Abstract]        
Fair value of available-for-sale securities pledged as collateral for FHLB borrowings 18,005,228   $ 18,005,228  
U.S. Government agencies        
Comparison of amortized cost and fair value of securities available for sale [Abstract]        
Amortized Cost 21,344,000   21,344,000 22,992,000
Gross Unrealized Gains 322,000   322,000 280,000
Gross Unrealized Losses (7,000)   (7,000) (69,000)
Fair Value (Carrying Amount) 21,659,000   21,659,000 23,203,000
Amortized Cost [Abstract]        
Amortized Cost 21,344,000   21,344,000 22,992,000
Summarizes temporarily impaired investment securities [Abstract]        
Less than 12 Months, Fair Value (Carrying Amount) 3,874,000   3,874,000 12,281,000
Less than 12 Months, Unrealized Losses 0   0 (69,000)
12 Months or More, Fair Value (Carrying Amount) 3,509,000   3,509,000 0
12 months or More, Unrealized Losses (7,000)   (7,000) 0
Total Fair Value (Carrying Amount) 7,383,000   7,383,000 12,281,000
Total Unrealized Losses (7,000)   $ (7,000) (69,000)
Number of impaired securities | security     2  
U.S. Government sponsored entities & agencies collateralized by mortgage obligations        
Comparison of amortized cost and fair value of securities available for sale [Abstract]        
Amortized Cost 28,130,000   $ 28,130,000 30,867,000
Gross Unrealized Gains 80,000   80,000 107,000
Gross Unrealized Losses (188,000)   (188,000) (402,000)
Fair Value (Carrying Amount) 28,022,000   28,022,000 30,572,000
Amortized Cost [Abstract]        
Amortized Cost 28,130,000   28,130,000 30,867,000
Summarizes temporarily impaired investment securities [Abstract]        
Less than 12 Months, Fair Value (Carrying Amount) 17,175,000   17,175,000 25,904,000
Less than 12 Months, Unrealized Losses (115,000)   (115,000) (402,000)
12 Months or More, Fair Value (Carrying Amount) 7,359,000   7,359,000 0
12 months or More, Unrealized Losses (73,000)   (73,000) 0
Total Fair Value (Carrying Amount) 24,534,000   24,534,000 25,904,000
Total Unrealized Losses (188,000)   $ (188,000) (402,000)
Number of impaired securities | security     12  
Mutual Funds        
Comparison of amortized cost and fair value of securities available for sale [Abstract]        
Amortized Cost 4,000,000   $ 4,000,000 4,000,000
Gross Unrealized Gains 0   0 0
Gross Unrealized Losses (220,000)   (220,000) (284,000)
Fair Value (Carrying Amount) 3,780,000   3,780,000 3,716,000
Amortized Cost [Abstract]        
Amortized Cost 4,000,000   4,000,000 4,000,000
Summarizes temporarily impaired investment securities [Abstract]        
Less than 12 Months, Fair Value (Carrying Amount) 0   0 0
Less than 12 Months, Unrealized Losses 0   0 0
12 Months or More, Fair Value (Carrying Amount) 3,780,000   3,780,000 3,716,000
12 months or More, Unrealized Losses (220,000)   (220,000) (284,000)
Total Fair Value (Carrying Amount) 3,780,000   3,780,000 3,716,000
Total Unrealized Losses $ (220,000)   $ (220,000) $ (284,000)
Number of impaired securities | security     1  
[1] Recurring