Correction of Error in Comparative Financial Statements (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Income before income tax expense		$ 19,464	$ 6,868
Net income available to common shareholders		10,291	2,996
Net gains		$ 1,016	$ 1,053
Basic and diluted net income per common share		$ 1.65	$ 0.48
Amortized cost basis of collateralized debt obligations	$ 29,300	$ 29,300
Parent Company [Member]
Income before income tax expense		34,691	$ 8,366
Scenario, Previously Reported [Member]
Gain (loss) related to transfer of pooled trust preferred securities, gross	(3,500)
Gain (loss) related to transfer of pooled trust preferred securities (net)	(2,100)
Income before income tax expense		15,943
Net income available to common shareholders		8,176
Net gains		$ (2,505)
Basic and diluted net income per common share		$ 1.31
Amortized cost basis of collateralized debt obligations	$ 25,800	$ 25,800
Scenario, Change [Member]
Income before income tax expense		3,521
Net income available to common shareholders		2,115
Net gains		$ 3,521
Basic and diluted net income per common share		$ 0.34