Low Income Housing Tax Credits (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) housing_equity_fund	Dec. 31, 2014 USD ($) housing_equity_fund	Dec. 31, 2013 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of housing equity funds | housing_equity_fund	4	3
Tax credits and other tax benefits	$ 120	$ 211	$ 6
Tax credits projected to be received	237
Other Assets [Member]
Schedule of Equity Method Investments [Line Items]
Investments in housing equity funds	9,000	6,500
Other Liabilities
Schedule of Equity Method Investments [Line Items]
Additional capital calls expected	$ 9,300	$ 6,800