Income Taxes (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary of the items that caused recorded income taxes to differ from taxes computed using the statutory tax rate
Tax expense at statutory rate									$ 5,438	$ 3,311	$ 2,562
Effect of state income taxes									287	196	85
Exempt income									(151)	(170)	(199)
Other									(205)	(224)	(32)
Income tax expense	$ 1,383	$ 1,489	$ 1,400	$ 1,097	$ 928	$ 834	$ 757	$ 594	$ 5,369	$ 3,113	$ 2,416