Variable Interest Entities VIE Net Income or Loss and Tax Credits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
CDE (NMTC)
Consolidated VIEs
VIE loss	$ (1,286)	$ (879)
Federal income tax credits	2,138	1,744
LIHTC
Consolidated VIEs
VIE loss	(974)	(1,082)
Federal income tax credits	$ 1,175	$ 1,270