Fair Value of Assets and Liabilities (Details 2) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($) Security	Jun. 30, 2015 USD ($) Security	Dec. 31, 2015 USD ($) Security	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Breakdown of trust preferred securities
Number considered OTTI | Security	1	1
Life-to-date impairment recognized in earnings	$ 140	$ 140	$ 140			$ 140
Trust preferred securities
Breakdown of trust preferred securities
Total number of trust preferred securities | Security	2		2
Par value, trust preferred securities	$ 1,770		$ 1,780
Number not considered OTTI | Security	1		1
Par value, trust preferred securities not considered OTTI	$ 770		$ 780
Number considered OTTI | Security	1		1
Par value, trust preferred securities considered OTTI	$ 1,000		$ 1,000
Life-to-date impairment recognized in earnings	140	$ 140	140	$ 140	$ 140	$ 140
Life-to-date impairment recognized in other comprehensive income	915		862
Total life-to-date impairment	$ 1,055		$ 1,002