Investment Securities (Details 4) $ in Thousands	Jun. 30, 2018 USD ($) Security	Dec. 31, 2017 USD ($) Security
Available-For-Sale Securities [Abstract]
Less than Twelve Months Number of individual securities | Security	6	8
Less than Twelve Months, unrealized losses	$ 122	$ 57
Less than Twelve Months, fair value	$ 5,488	$ 6,931
Twelve Months or More Number of individual securities | Security	8	9
Twelve Months or More, unrealized losses	$ 239	$ 170
Twelve Months or More, fair value	$ 8,837	$ 9,434
Total Number of Individual Securities | Security	14	17
Total Unrealized Losses	$ 361	$ 227
Total Fair Value	$ 14,325	$ 16,365
U.S. Government and agency obligations
Available-For-Sale Securities [Abstract]
Less than Twelve Months Number of individual securities | Security	4	4
Less than Twelve Months, unrealized losses	$ 84	$ 34
Less than Twelve Months, fair value	$ 3,916	$ 4,472
Twelve Months or More Number of individual securities | Security	5	5
Twelve Months or More, unrealized losses	$ 148	$ 108
Twelve Months or More, fair value	$ 5,958	$ 5,999
Total Number of Individual Securities | Security	9	9
Total Unrealized Losses	$ 232	$ 142
Total Fair Value	$ 9,874	$ 10,471
Mortgage-backed securities - residential
Available-For-Sale Securities [Abstract]
Less than Twelve Months Number of individual securities | Security	2	4
Less than Twelve Months, unrealized losses	$ 38	$ 23
Less than Twelve Months, fair value	$ 1,572	$ 2,459
Twelve Months or More Number of individual securities | Security	3	4
Twelve Months or More, unrealized losses	$ 91	$ 62
Twelve Months or More, fair value	$ 2,879	$ 3,435
Total Number of Individual Securities | Security	5	8
Total Unrealized Losses	$ 129	$ 85
Total Fair Value	$ 4,451	$ 5,894