Investment Securities (Details 4) $ in Thousands	Sep. 30, 2018 USD ($) Security	Dec. 31, 2017 USD ($) Security
Available-For-Sale Securities [Abstract]
Less than Twelve Months Number of individual securities | Security	1	8
Less than Twelve Months, unrealized losses	$ 3	$ 57
Less than Twelve Months, fair value	$ 497	$ 6,931
Twelve Months or More Number of individual securities | Security	12	9
Twelve Months or More, unrealized losses	$ 389	$ 170
Twelve Months or More, fair value	$ 13,180	$ 9,434
Total Number of Individual Securities | Security	13	17
Total Unrealized Losses	$ 392	$ 227
Total Fair Value	$ 13,677	$ 16,365
U.S. Government and agency obligations
Available-For-Sale Securities [Abstract]
Less than Twelve Months Number of individual securities | Security	1	4
Less than Twelve Months, unrealized losses	$ 3	$ 34
Less than Twelve Months, fair value	$ 497	$ 4,472
Twelve Months or More Number of individual securities | Security	8	5
Twelve Months or More, unrealized losses	$ 260	$ 108
Twelve Months or More, fair value	$ 9,346	$ 5,999
Total Number of Individual Securities | Security	9	9
Total Unrealized Losses	$ 263	$ 142
Total Fair Value	$ 9,843	$ 10,471
Mortgage-backed securities - residential
Available-For-Sale Securities [Abstract]
Less than Twelve Months Number of individual securities | Security	0	4
Less than Twelve Months, unrealized losses	$ 0	$ 23
Less than Twelve Months, fair value	$ 0	$ 2,459
Twelve Months or More Number of individual securities | Security	4	4
Twelve Months or More, unrealized losses	$ 129	$ 62
Twelve Months or More, fair value	$ 3,834	$ 3,435
Total Number of Individual Securities | Security	4	8
Total Unrealized Losses	$ 129	$ 85
Total Fair Value	$ 3,834	$ 5,894