Investments in Qualified Affordable Housing Projects (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Carrying value of qualified affordable housing project investments	$ 7,666	$ 8,993
Investment amortization	1,328	1,594
Tax credits and other benefits	(1,883)	(2,265)
Total	$ (555)	$ (671)