Investment Securities (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) Integer
Investments, Debt and Equity Securities [Abstract]
Number of Investment Securities Sold	46	74
Available-for-sale Securities Pledged as Collateral	$ 155,300	$ 142,500
Description of Holding Securities	there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity.