Investment Securities - Gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (Details 2) $ in Thousands		Sep. 30, 2016 USD ($) Securities Security	Dec. 31, 2015 USD ($) Securities Security
Available-for-Sale
Less than Twelve Months Number of individual securities | Security		5	11
Less than Twelve Months, unrealized losses		$ 13	$ 93
Less than Twelve Months, fair value		$ 7,123	$ 12,251
Twelve Months or More Number of individual securities | Security		2	1
Twelve Months or More, unrealized losses		$ 15	$ 14
Twelve Months or More, fair value		$ 1,092	$ 821
Total Number of Individual Securities | Security		7	12
Total Unrealized Losses		$ 28	$ 107
Total Fair Value		$ 8,215	$ 13,072
Held-to-Maturity
Less than Twelve Months Number of individual securities | Securities		3	2
Less than Twelve Months, Unrealized Losses		$ 2
Less than Twelve Months, Fair Value		$ 560	$ 455
Twelve Months or More Number of individual securities | Securities		1	2
Twelve Months or More, Unrealized Losses			$ 1
Twelve Months or More, Fair Value		$ 45	$ 126
Total Number of Individual Securities | Securities		4	4
Total Unrealized Losses		$ 2	$ 1
Total Fair Value		$ 605	$ 581
U.S. Government and agency obligations
Available-for-Sale
Less than Twelve Months Number of individual securities | Security		3	6
Less than Twelve Months, unrealized losses		$ 4	$ 32
Less than Twelve Months, fair value		$ 4,102	$ 5,968
Twelve Months or More Number of individual securities | Security
Twelve Months or More, unrealized losses
Twelve Months or More, fair value
Total Number of Individual Securities | Security		3	6
Total Unrealized Losses		$ 4	$ 32
Total Fair Value		$ 4,102	$ 5,968
Mortgage-backed securities - residential
Available-for-Sale
Less than Twelve Months Number of individual securities | Security		2	5
Less than Twelve Months, unrealized losses		$ 9	$ 61
Less than Twelve Months, fair value		$ 3,021	$ 6,283
Twelve Months or More Number of individual securities | Security		2	1
Twelve Months or More, unrealized losses		$ 15	$ 14
Twelve Months or More, fair value		$ 1,092	$ 821
Total Number of Individual Securities | Security		4	6
Total Unrealized Losses		$ 24	$ 75
Total Fair Value		$ 4,113	$ 7,104
State and Municipal securities
Held-to-Maturity
Less than Twelve Months Number of individual securities | Securities	[1]	3	2
Less than Twelve Months, Unrealized Losses	[1]	$ 2
Less than Twelve Months, Fair Value	[1]	$ 560	$ 455
Twelve Months or More Number of individual securities | Securities	[1]	1	2
Twelve Months or More, Unrealized Losses	[1]		$ 1
Twelve Months or More, Fair Value	[1]	$ 45	$ 126
Total Number of Individual Securities | Securities	[1]	4	4
Total Unrealized Losses	[1]	$ 2	$ 1
Total Fair Value	[1]	$ 605	$ 581

[1] Aggregate unrealized loss position of these securities is less than $500.